What does whether they’d go bankrupt or not have to do with whether they’re an ad company?
They sell third party ads: companies unaffiliated with Apple pay Apple to advertise on Apple platforms.
They’re an ad company. Just because it’s currently a small slice of their total revenue doesn’t make it untrue.
I guess it’s also a financial company, since they have a branded credit card?
I mean if you don’t care about details that’s fine I guess. Let’s call any company that sells and/or buys any amount of ads an "ad company". Let’s put them all into one bucket and judge. That’s super valuable.
What matters is that the parent comment said “Apple is an ad company now,” as if that negated all the privacy and security stuff they do.
Making some cash on ads doesn’t have to rely on targeted tracking. That only matters if ads are an existential part of your business, and without huge ad revenue growth, your company is dead.