If your goal is purely muscle hypertrophy, then using straps is not a problem, as you can get better forearm growth from working them directly. However, if you interest is in strength then I think that strap use should be very limited. I personally never use straps or a belt, just because my goal is to develop whole body strength, not just in a single lift.
If you are interested in increasing your grip strength so you no longer need to rely on straps, then IronMind has some products that I like. Apollon’s Axel, Rolling Thunder, the grippers and some pinch grip tools too.
Koevoet