I've never heard anything of about 80% of these L2's

The lightning network is the only one being integrated on major scale by centralized exchanges, point of service payment providers, online casinos, online vendors, Cashapp, ect. While lightning has its issues, mostly the failure to find a route and payment in transit, it's the best bet at getting Bitcoin utilized by more common citizens that don't want to go all in on crypto. And that's what we need if Bitcoin ever has a chance at truly replacing fiat.