Yes, but there are liberal protestant seminaries that have 40 to 50 percent homosexuals, and some even allow them to room together.
Whereas the catholic seminaries that had many homosexuals are in the past. Michael Rose's book has a lot of smoke about this, but is controversial because many of the problems he confronts have since been corrected. It's like all the scandals in the catholic church: Most are about stuff that went on in the 1970s or 1980's. Most of the bishops who went along with these things have been replaced or are approaching retirement age and will be replaced...so the houses are being cleaned and will continue to be cleaned. This is NOT true in some liberal protestant churches.
That is one reason I still suspect that the problem in the RC movement is bigger than it is in the Protestant movement.
(Anyway, a liberal Protestant is not really a Protestant. This goes back to the doctrinal distinctives of the Protestant Reformation.)