I would rather prefer responses to become smaller. If you would check TXT record for almost any big company you'll find a lot of verification records which either unnecessary (because better way to confirm domain ownership exists, e. g. by adding a DNS record with unique name instead of using main domain TXT record) or outdated (e. g. they did verify multiple times but kept records from all attempts). And more generally big companies tend to treat domain's DNS TXT record as an append-only structure and never clean junk it accumulates.

  host -t txt amazon.com | wc -l
  35

> never clean junk it accumulates

That's true of everything inside a corporate codebase. There's no reward for refactoring, only adding new features or fixing a SEV1. Why should that be everyone else's problem because they can't clean it up?