Not necessarily. Whenever someone who normally has proper grammar completely lacks capitalization, punctuation etc., that generally implies it's either a joke or sarcasm.
Hmmm... I'd have to put my team from 4th gen to 5th gen, but if you need more people I'm in
Only glitch clonin, not hack clonin. Splash are you joining in?
Are we allowed to PokeGen our team? If not I may not have time to get a team
What's PokeGen? If it's a form of hack, i'd rather you not.