Any advertising that's badmouthing another product is shady. I don't know what advertising you've been seeing that's so much worse.

‘Are you still drinking coffee brand A? Try coffee brand B!’ Seems almost comically benign, 50s-style advertising to my ears.

If Microsoft had run that ad in the usual places accessible to everyone that can afford it there would not be much outrage.

Imagine if the real estate company that built your house installed speakers that talk about how much better the furniture also made by that company is every time you installed IKEA furniture.

Doesn't still make it okay.