1. It is unclear that OTD become Reform or Conservative, rather than simply non-religious assimilated Jews who children are not distinguished from goyim.
2. If a potential Baal Tseuvah can’t trace his/her ancestry back to when the family was frum (still possible for 20th century immigrants, a lot trickier from those whose families came before the Civil War), they are “safek” goyim. This may be a good thing since given the breakdown in “morality” during the second half of the 20th century, as well as divorce becoming common, they are also probably “safek mamzerim” as well, so it may be a good thing to start regarding potential baalei tseuvah as being “safek goy, safek mamzer” as that status (as became clear with the mass migration of Ethiopian Jews) is easy to resolve.