Of course not. Thats like asking if speed reading will help you learn to read.
5 minute games.....??
hmm ok didnt think of it that way
If you enjoy playing speed chess (I dont for some strange reason). The by all means play it. But if youre serious about improving, being the best player you can be? Then no. Speed chess will not get you there. Yes you can play a few games a day if you want. But if long time controls are not your main focus you will hold yourself back.
does playing 5 minute games help your play in longer game formats? thoughts?