Yep, nobody cares very much-though I occasionally get slightly annoyed when somebody lists a 12x26x56 scope for sale.
Also get a little annoyed when somebody says or writes "first-year anniversary," or "fifth-year anniversary." The "anni" in annversary means year, which is why until a few years age the common form was "first anniversary", or "fifth anniversary."
But objecting to any of this is like shoveling sand against an incoming tide.