I'd agree with you. I used a donor that was in a bad front end wreck and got lucky with only having to replace the cradle and dipstick for the build. Could have gone much worse. It's an expensive gamble on replacement parts being available and the engine runs OK.I would think that for MOST builds, I would not consider any donor with major front end damage.
You never know what you have unless you do a TOTAL teardown of all major components.
A rollover, rear-ender, or a T-bone would be better than a front-ender.
I know many here used donors with front end damage, but it is not an optimum situation.