There are mechanical keyboards that are lower profile. I felt the same as you with my old Filco Majestouch-2 with MX Blues, but switched to a Logitech G915 with MX Browns and enjoy it a lot more.
The key travel is still the same, but I found that having the tops of the keys closer to the desk surface made it a lot less straining.
I also recommend a desk chair that lets your forearms rest so that your wrists are parallel with and just slightly above the desk surface, so that your fingers are sort of pecking down (L shape) instead of curled (J shape). For any keyboard, but it matters more the taller the keyboard.
The key travel is still the same, but I found that having the tops of the keys closer to the desk surface made it a lot less straining.
I also recommend a desk chair that lets your forearms rest so that your wrists are parallel with and just slightly above the desk surface, so that your fingers are sort of pecking down (L shape) instead of curled (J shape). For any keyboard, but it matters more the taller the keyboard.