You'd still need to host it, which involves money, a way to pay for it (credit card), which includes proving/disclosing your identity (which would be dangerous if you're speaking out against an authoritarian government), sometimes you legally have to be over 18 or 21 to enter into contracts (so if the service provider finds out you're underage they can shut down your account even if you otherwise pay the bill), and hosting anything controversial or that goes against the mainstream is unlikely to stay up for long if it gets popular.
Every desktop browser comes with a development environment far more capable than any 8-bitter BASIC. You can paste your code in an email or an IM and send it to whomever you like. Teens interested in swapping 'subversive' code today would have a vastly easier time than they did in 80s Czechoslovakia.
How many people are capable of that though? Tech literacy (in terms of using a general-purpose computer and not a walled-garden) seems to be decreasing and the industry trend is to isolate users from it even more.
If nothing gets done it's probably a matter of time before general-purpose browsers end up only allowing "signed" web pages by default (this is already happening with extension API being deprecated, making things like powerful ad-blocking impossible on certain browsers).
Anyone who cares to? It's not like 'tech literacy' was higher then and the point the original comment was making was that somehow, the kids today have it harder than 80s Czech teens. I don't think it stands up to scrutiny - it's not true factually now and to salvage the argument you have to come up with hypotheticals like 'only signed web pages allowed' and broadly complain about 'walled gardens' (you couldn't write your own game for your NES back then, either)
Even 'fantasy' versions of 80s-style environments exist, one of them was used to develop an actual hit game. Aspiring tinkerers have never had more choice.
