> many manufacturers don't restrict flashing a different rom Manufacturers don't, but app makers do. I know people running on LineageOS that have to keep a sec

> many manufacturers don't restrict flashing a different rom Manufacturers don't, but app makers do. I know people running on LineageOS that have to keep a second smartphone on stock Android for their banking authenicator app (which fails on Lineage because it's not the manufacturer-supplied ROM and that supposedly means it's been hacked).