Nope. Not messing with warranty. Using Mazda filters.
What I did figure out is it is not actually a 65. On a Mazda forum I found a comment to use the wrench that is sold for Toyota. It is 64.5mm... Just ordered on online for 8 bucks. The one I got also has castle 'flutes' on top to open some special canister that is over the filter of Toyotas and some others. So, if I find myself doing an oil change on one of them I'll have that.