Agreed. With some devices you can sand the branding off of them, but they still look pretty conspicuous due to their shape. The BitBox02 is probably the most "ordinary" looking out of the HWWs.
I'd love for there to be HWWs which are designed to look exactly like run-of-the-mill calculators you'd find in any home. Maybe they'd even behave like calculators unless switched on in a specific way. The Coldcard basically looks like one anyway, minus a few buttons.