Transgender lady here. I have experience on both sides of this.

Testosterone does a lot of interesting things to your body, including making your skin more rough. This includes your fingertips.

Several years after taking HRT, I had problems holding onto things. This wasn’t a matter of grip strength. My fingerprints had lost the pronounced ridging that they used to have. The result was butterfingers; losing grip on anything that wasn’t roughly textured itself. Anything smooth would just fall right out of my hands. And jar lids became suddenly difficult to open.