As long as Twitter's public, anyone can just start a second account, to follow anyone who's blocked their main.
If anything, the earlier way was offering a false sense of security.
I've blocked my stalker, so now he won't see my holiday pics and break into my house to wear my clothes.
opening a second account is possible, you are right... So that means, it's even more petty. He doesn't want to use a second account to see what the people that blocked him (big names, mind you) are up to.
it's even more childish! hahah
It's not that he doesn't want to use a second account for that. He doesn't want HIM to be blocked. He doesn't want his speech so sullied by folks that disagree with him. He wants HIS account to be universally acknowledged as the greatest account. He doesn't care about anything not himself.