Users aren't supposed to be (choosing && swapping) CPUs by themselves between these identical sockets(LGA2011 v0 through v3). These are supposed to be bought in trays and kitted in a shop. So reusing same parts for cost saving should not cause issues.
Consumer oriented sockets(LGA115x) has different notches and pin counts to prevent this issue - actually, some of "different" sockets in consumer oriented sockets with "different" chipsets are actually identical, and sometimes you see Chinese bastardized boards that use discarded server-marked chips and pins-fudged hacker builds online that should not be possible according to marketing materials, so there is their own rabbit hole there.
Consumer oriented sockets(LGA115x) has different notches and pin counts to prevent this issue - actually, some of "different" sockets in consumer oriented sockets with "different" chipsets are actually identical, and sometimes you see Chinese bastardized boards that use discarded server-marked chips and pins-fudged hacker builds online that should not be possible according to marketing materials, so there is their own rabbit hole there.