It was only last year that I discovered that Adobe has changed the license terms so that it’s no longer permitted. At the same time you can also no longer take out a subscription solely to Adobe fonts - it’s only available as part of a Creative Cloud subscription.
So in order to comply with license terms a client has to take out a subscription for an Adobe product e.g Photoshop in order to legally use a font on their website.
Any wonder why most designers despaired on hearing of the Figma purchase?