There is a limit on everything to keep spams like Ordinals out. It has been like this forever. OP_RETURN size is limited.
Reusing OP_RETURN is not. Yes, you can put up to 10,000 bytes in an OP_RETURN output, if I'm not mistaken, but nothing prevents you from re-doing it, essentially injecting as much data as you want.Such transaction would be deemed non-standard though since the standard enforce only 1 OP_RETURN with maximum size 80 bytes per transaction. And while people can split X OP_RETURN output to X transaction, there are big overhead which supposed to discourage people from adding tons of arbitrary data.
I was of the impression that Taro was designed for that sort of thing?
I haven't read it. I know how lightning works in theory, and it just doesn't make much sense but maybe it's possible. So yes, this is what "devs need to fix it" looks like. Not "HuRr DuRr BaNz ThEmZ nAo PlZ!" like the censorship supporters want. The provision off an off-chain solution is ideal for this sort of thing. Although I'm sure franky1 will still hate it for reasons known only to him.
Now it comes down to hardest part, where people need to convince Ordinal user switch to