Would I recommend uMatrix to my non technical friends? Absolutely not.
For technical people it's a matter of self selection. It's worse for the ones of us that can't bother checking which scripts break the page and deciding whether to enable them. It's great for the others. Personally I can't imagine using the web without uMatrix (and uBlock Origin). For the site that really breaks no matter what, if I really need it either I open it in a Vivaldi private window (I only have uBlock in that browser) or if anything else fails, I start Chrome and close it immediately after I did what I had to do.
For technical people it's a matter of self selection. It's worse for the ones of us that can't bother checking which scripts break the page and deciding whether to enable them. It's great for the others. Personally I can't imagine using the web without uMatrix (and uBlock Origin). For the site that really breaks no matter what, if I really need it either I open it in a Vivaldi private window (I only have uBlock in that browser) or if anything else fails, I start Chrome and close it immediately after I did what I had to do.