Feeling play in headset: front wheel block?

Not sure if it’s me, but should I be worried that the amount of torque being forced on the front wheel in a stationary position like an indoor trainer puts added stress on the headset and stem?

I just got zwift and have been going pretty heavy on the climbing routes. Most of the time I’m out of the saddle and really pushing down on the bike on steep gradients. I felt some play after my most recent indoor ride.

Ive re-torqued everything to spec but I’m wondering if a front wheel block solves this?