Folks don't rip Gronkowski or LeBron, or Chris Paul as the dad and DeAndre as the mom in a family with a grandpa hall of famer, when they do a commercial for some company willing to pay their fee. Why should musicians be any different?
I can see both sides.
On the one hand, artists are often painted with the broad brush of "I do it for the sake of art only", and any compromise, even licensing old material, is sacrilege.
On the other hand, artists need to pay the bills, or just want extra income, just like athletes.
Typical stereotypes:
- If an artist writes a song for a commercial, but does not appear in the commercial, they are called out for lowering their standards as a commercial work for hire.
- If an artist appears in a commercial covering an old song, they are sell outs.
- If an artists writes new material for a commercial they appear in (like Mr. Paisley and Nationwide) they are vanity-driven sell outs.
I don't know if I have an overall "general" opinion. An artist I greatly respect made some extra money early in his career doing commercial jingle music, which if he had not done might have risked his ability to follow his career.
I do think that most celebrities appearing in ads are overpaid, and do not make me want to purchase the product or service any more or less than if some random "actor" had played the role.
I know I did not buy a signature guitar endorsed and played by that no-longer-struggling artist, even though it was a pretty good guitar, because it didn't do anything special for me, and adding his name to what was essentially an existing model just pumped up the price, not the value.
Lewis Hamilton (Formula 1) endorses a certain brand of luxury watch (I don't even remember what, TBH), and his driving glove has an oversized image of the watch printed on his wrist. He drives a racing car for a living, so his choice of luxury seems like an odd selling point for me. And frankly, if he came on TV to tell me how great the new Mercedes mark 456123 class zz-top was to drive and handles so smoothly, and I should buy one as my next car, I still wouldn't really be all that stirred, even though in theory at least I would have that in common with him - I also drive a car, and his opinion of a well-handling car might be valuable. But maybe I'm not the kind of person those ads and endorsements are trying to reach.