I didn’t find any websites that flag such accounts.

You can improve the alignment by reviewing each individual road or railway and remove the tag or set it to a different value after fixing any issues. I’ve seen some users removing the tiger tags after reviewing each road. Probably the biggest problem with TIGER data is that they were originally created for taking census surveys, not for making maps. This means that in many areas the roads aren’t aligned with their true position, but if you imagine the TIGER database as a sketch for people walking around with clipboards, then it has all the roads laid out roughly correctly. The work then needed is to drag everything into its correct place and add more nodes to smooth out curves. tiger:reviewed=* osm.wiki/TIGER_fixup#Mapping