No, because Fresh in the MAIN GENRE is the main or the only means of exposure on this site for the not social-media super-stars creators.
But the combined genre category will be overflown with works, making it far harder to find readership. Atm, if you add up Romance, BL, GL and LGBTQ, you will have a GIGANTIC category, so might as well go and post it on Wattpad then, hoping to stand out among the 60 billion books.
Anyway, it's good the way it is imo for romance divided into 4 main genres each with its own Popular, Trending and Fresh. It's just how it works. Post in Action, and you are going to sit in Fresh for a few hours, but your potential audience pool is small. Post in BL, and you will have 5-10 books right over you the minute you've posted, but bigger pool. Combine all romances--and good-buy any exposure.
BL is certainly not hurting for readers, so concerns about avoidance are unwarranted & nothing stops anyone from choosing Romance as their main genre. People specifically want to go to BL and GL hoping for more audience or shop around for audience in 2-3 main categories.
And no pedantic argument is going to change the practical side of things that dictates that romance has to have multiple categories while Action doesn't.
Thinking that people actually search on tags or subcategory is unrealistic. We are very, very lucky if they select Free-to-Read and click away to Fresh in a Genre!