I also miss the posts of Leo (not so much W_Y because I cannot respect a poster who turns up throws insults in all directions and then disappears again). Can you give any examples of posters who have been instantly abused (I mean personally). You should try going on the QPR forum occasionally - being called a liar is mild on there, but they do stay and fight their corner.
I do not accept we should allow abuse just because it appears elsewhere. I am all for robust debates but once it sinks below the polite stage it rapidly deteriorates. W_Y had to put up with some pretty nasty abuse, he was bound to retaliate. You will just have to believe me when I say I have had PMs from 'Tory' posters who just give up after a short while.
Ultimately the forum needs to decide if it just wants a Tory / Brexit bashing platform or a proper forum.