"How is this onerous? According to the article it just prints a message inside of the battery health Settings menu. It doesn’t pop something up, it doesn’t refuse to work, etc. A warning embedded in a settings menu hardly seems onerous"
1. Apple should charge reasonable prices for such battery replacements at their Apple stores;
2. If a genuine replacement Apple battery has been fitted by an independent repairer then no warning should be given at all.
3. If a generic replacement Apple battery has been fitted by an independent repairer then a one off (but not repeating) warning is acceptable.
^ Everything above is reasonable and Apple ought to try to start acting in that way too.