Should I be concerned if I block someone and they are unhinged enough to make a new account just to message me again?

I don't tolerate drama. I've been messaging this guy over the week and I really liked him.But right when I was about to meet him for a "date" of sorts he told me right before I left that his friend was coming along.I then told him I would reschedule to see him again one on one the next time he could. He seemed pissed but I didn't want to meet his friend...I wanted to meet him...So a few more days go by and then I notice he's been sending really weird texts that are either troll material or he's crazy.Stuff like "Oh baby you're my type" and "I think I'm in love with you" when we haven't even fucking met and hes not even giving real responses.Finally I told him he was being kind of cryptic and that he texts differently than most guys I talk to.Then he says "OK I'll shut up then".I was stunned. I told him I didn't want that at all, and I was sorry for any miscommunication. I apologized and reinforced that I was interested in him.Then he would log in multiple times in the next 2 hours and look at my profile but not respond.So I asked "Did I upset you".He said "No, I just don't have time for drama".That was it for me. I blocked him. Then he made a new account and said "So you blocked me? I'm sorry I wasn't good enough for you".I blocked this new account as well....Should I be worried? I've never really run into crazy on apps before because I go out of my way to be as nice as I can to guys on there...but my patience is not unlimited.I was just so tired of this strange game it was exhausting for me trying to figure out what was going on or how he felt so I felt it was time to walk away.Do you think I should be worried about him following me on apps? If this has happened to you how have you dealt with it?