I think this was not the case, as shown in the screen capture posted with the final result.
The new gravity import routine for Pi-hole V5 will skip domains that do not meet the HOSTS requirements, and will report how many domains were loaded. If all domains were not loaded, it will also report how many domains were not loaded.
The worst offender in the group that @stone1978 loaded was:
[i] Target: https://www.joewein.net/dl/bl/dom-bl-base.txt
[✓] Status: Retrieval successful
[i] Received 71444 domains, 18010 domains invalid!
Sample of invalid domains:
- 0-as69vh7k2.biz;1
- 001linker.net;1
- 0034ufow.com;1
- 00hotmlsecure.live;419
- 01aj78cz5spx-9n3.com;1
Several of the other lists had a few domains rejected, but not near this many. I wouldn't subscribe to this list.