Some thoughts on this: I suspect I'm rather different to you in this respect. I like to keep a record of all my film reviews (and have done, for twenty years) so I can look back on what I said at the time, and whether that opinion shifts over time (it sometimes does).
But I do understand some of what you are getting at here. For example, my first three novels will quite rightly never see the light of day. And even some I have published, I've later withdrawn, revised, and put out again. The George Hughes Trilogy, which I've been blithering on about a lot here of late, is a case in point (I even retitled those).
My blog posts I consider a lot more disposable, but I still keep copies on file. Same with my Medium work. :)