>>104501365Google might have detection on specific words and phrases that you should probably avoid but an advantage it has relative to all other systems (among other things) is that it's enormously too big for it to be even remotely feasible for them to human moderate. You can write about whatever the hell you want as long as you make the no-no phrases implicit. AO3 is a little more lax but it's not really user friendly IMO.
The only thing you can really do if you're truly unwilling to compromise on artistic freedom and looking for timelessness is rely on any of the hundreds of shitty knockoff pastebin sites and save a local copy (which you should be doing anyway) in case it ever goes under.
