You can't attend all 30+ tracks at once anyway, you need to see recordings afterwards anyway if you are remotely interested in consuming the conference. I'd say the experience is just as much about meeting the people behind all the internet handles, getting into a full lecture room one talk in advance and listening in to something you otherwise wouldn't, join something bigger than email lists and matrix rooms, it's a unique wibe you can't find anywhere else.
I wonder if it naturally regulates itself in the way that people who get fed up by the queues don't come back the next year. You can definitely start by adding measures to limit the capacity or whatnot, but in both cases you exclude a certain part of the potential participants. I think I'd rather keep the wibe and ensure people can at least experience it once, than start gatekeeping.
Also, the fries are good.