Is that an "excuse"? I mean, what even is an excuse? I think it is simply reality. Only, I still think we should all not want centralized systems capable of controlling the flow of information, money, etc. The decentralized systems we have at this point aren't bad... they just aren't as good as current centralized ones. Hell: they even compare favorably to the 90s-era centralized systems!
As it stands, rather than trying to increasingly regulate these centralized systems in the hope they eventually go away, we've been instead subsidizing (or even "bailing out" in some cases) their awkward control, giving them power beyond what anyone previously could have imagined, enabling their crazy scale, because... it's efficient and easy? That's super lame :(.
It would be great if you would not snidely assume you know anything about me in future posts, thanks! I am reasonably familiar with attempts at decentralizing webhosting, at least (off the top of my head: i2p, FreeNet, and (arguably) Tor hidden services are major examples that come to mind) and to describe any of them as "slightly worse" than the mainstream web is laughable. I'm certainly willing to hear you out if you have better examples, though; I can't help but note that as indignant as you are you still aren't providing any examples of these wonderful decentralized systems I'm so ignorant of.
In fact, it's easier to make the case against Section 230 because an internet actually did exist before Section 230 and was fairly decentralized.