Should People Get Their Role Even if They Type it Wrong?

So I usually play normal blind pick and this happens on many occasions. I type in "adc" but someone before me typed in "c". Of course, we fight over our roles. I said that I called "adc" first but the other guy said that HE called it before me even though all he said was "c". He argued that I should know what he means by "c" but my argument is that it's I put in the extra time to type in 2 more letters to spell out the entire role and all he had to do was type in one and expect that I SHOULD know what he means. If that's the case, then everyone would just be typing one letter for their roles to save time but that's not the case. What do you guys think? Am I right? Or is he right? (PS, This is my first time using the boards. I tried searching up other posts with my problem but they never came up. I decided to make my own to answer my problem)