Root access is irrelevant; modification detection is relevant. If your OS was sealed-attested, root wouldn’t matter (Macs have this in shipping production by default and it works fine for everyday users). For modding, go for it; your modded OS will be signed by your own crypto key (or none at all). Unfortunately, the media and the businesses and quite a lot of expert users confuse root-access-enabled as a convenient modification-detection method (presumably Google’s core is more competent than that, has anyone studied it?). Sigh.