Is it normal for someone to block you, just for asking for a draw?

I was playing in a King Of The Hill tournament, as I regularly do. I was playing with someone and asked for a draw..,. Then, they came back saying, "Blocked you". 

My attitude is, "don't ask, then you don't get". 
Isn't that very much OTT? Just say no or ignore it...

I'll still play with them in other tournaments, so I don't know what they 'gained' by blocking me. 

People are odd

I think they are jealous of your puzzle rating.

23695 and i thought i spent too much time on puzzles 

Yes, it can be seen as over the top. It is important to remember that tournaments typically come with rules and etiquette that should be followed. Even if the other player declined your offer for a draw, it is important to remain respectful and civil in your interactions with them.

...I think it's a coicidence, they looked at your profile and it seems... sus

Meaning?

i mean it depends. If you were losing or something and offered a draw... I wouldn't be surprised. Odd, yes, but reasonable? Also yes.