Taylor touched on it, but yeah webcomics are EXTREMELY not the scene they were when a lot of people our age got into it (people our age now being in the position of having enough work behind them to 'abandon' it meaningfully).
Almost everyone I know who used to run a webcomic back then still cares a lot about those stories. Some people have moved into different mediums, some have rebooted their work and repackaged it for places like patreon or aggregators, a lot of them still produce free work for their audiences in one form or another even if it's not a continuation of their original 'one big story'. And some of them ARE still plugging away at the same projects, the same way they always did. But the skills that got people into webcomics 10-15 years ago are not the skills you need to get any kind of attention in today's market.
I complain a lot about 'hustle culture' taking over artistic spaces online, and that grievance really roots from what happened to webcomics more than anything else. There is no reason that you should need to be a marketing guru to publish an free indie comic online. There is no reason that you should be expected to update daily, or three times a week, or even once a week if you don't want to. There was genuinely a time when some of the best examples of the genre (and best known among Webcomic Likers) were uncategorisable experiments published one page at a time every other phase of the moon on wordpress blogs or static html sites.
If you were excited by webcomics as a medium in 2010, you were probably excited by qualities of the scene that simply don't exist any more - or at least certainly don't exist in the same form, or to nearly the same extent. Project Wonderful and webrings meant tiny comics still had shared readerships, and an avenue for connecting with new audiences through peers with similar interests. Micro-forums and comment sections meant each comic had its own little mini community, often full of other artists who were excited to talk process. Maybe the defining artistic relationship of my whole career, which has opened up more job opportunities than my actual degree, was forged in a webcomic forum with about 8 regular users.
The biggest loss I felt, personally, was the disappearance of spaces for talking about art with amateurs who really cared about experimentation and expression. A lot of it was super goofy, but bouncing off other teenagers with messy over-ambitious ideas about infinite canvas and found-object comics and branching storylines really ignited my passion for trying things. There were always parallel conversations about how to find an audience, whether merch was worth it, which conventions made money, but they were just as questing and experimental. Today, creative spaces are (somewhat necessarily, by nature of the way the internet has changed around us) dominated by marketing talk. The question hanging over every creative question for webcomic artists today seems to be 'but will it drive engagement'. And that's fucking miserable.
Anyone who got into webcomics before the shift to algorithmic feeds, omnipresent adtech and the premeditated murder death of Project Wonderful has probably looked around at some point and thought 'where the fuck am I?' Some artists have adapted comfortably, but a huge proportion of those who were most invested ten years ago were just never going to be interested in the skills that drive the current webcomic market. Because it is a market now, not an art scene. People have always needed to make money, and webcomics have never been especially profitable, but there was a time when they were an outlet - something you did after your shift at the bar, because it came with broad possibilities and a vibrant social scene. Now they are a second job.
Here's my point: when you notice the great proportion of long-running comics that just faded away or stopped altogether at some point, it is worth recognising that this wasn't just burnout. It was an extinction event.