I really don’t think it treated Shabbos itself as an inconvenience; I think it marketed the product as something which can help avoid inconvenience caused by Shabbos. I think Chazal did the same by instituting the mitzvah of hadlokas neiros, one reason for which is sholom bayis, “shelo yikashlu al eitzim va’avanim”. There’s still plenty to criticize about the marketing, though.
In what way can that be so, other than providing the “delight and comfort” that only a melacha would accomplish?
I agree that it’s wrong because it involves melachah; I was still addressing your chilluk between the KosherSwitch and the Kosher Lamp.