Plenty of bullying going on directed at Corbyn now, particularly from the Telegraph. Some people called his performance 'abysmal'. They lost 24 seats (which isn't that much anyway, considering they lost more MP's than that in the General Election last year) in local councils, but the Tories lost 35! I don't see any articles saying 'Cameron's leadership questioned' even though in terms of councilors lost they did worse than Labour. If anything, it shows that Labour supporters have more faith in Corbyn than the Conservative supporters do in Cameron.
Ok, Labour did pretty bad in Scotland, but it doesn't make it easier for them when the main Scottish party, the SNP, is also a Centre-left social democratic party. Perhaps Labour's failure there was not due to Jeremy Corbyn but maybe because of their Scottish leader Kezia Dugdale, who seems to have kept her mouth shut for most of the election. She doesn't seem to be a very strong leader and should be replaced by someone who knows how to tell people what they stand for. It might also be worth noting that in terms of constituency votes, Labour got more votes than the Conservatives in the Scottish election.
Outside of Scotland, Labour didn't do that badly. They managed to retain their 12 seats in London, whereas the Tories lost one, plus they have themselves a London Mayor, which is pretty good going. In the Welsh elections, they came first. They did lose a seat, but the Tories lost 3 and performed much worse than them. They also won their two by-elections, one with a larger majority than before. So I say that Jeremy Corbyn didn't do too badly, and that Labour's disappointments were not his fault. I just hope that he can get his party in order for next year, and if in 12 months time we have a strong and organised Labour Party, then they could do very well in the next round of elections. If you wish to call Labour's performance bad, just remember that the Conservatives didn't exactly do great either.