Of course not, but... a service is what you make of it.
If I want to be inspired, I might not also want to simultaneously be reminded that, historically, a lot of folks didn't even really THINK that women might ALSO be doing historical stuff, because blah de blah blah.
So I wouldn't be opposed to tinkering with the quotes, as long as that weren't done invisibly.
The first thought that comes to mind is giving the option to flip all gendered quotes, none, or at random. If you flip the gendered words of a quote, also flip the gender of the person (Alberta Einstein?) so that we're not pretending Albert actually said that word-for-word.
Caveat: I've never subscribed to a quote-a-day thingy of any kind anyway (and have not subscribed to this one), so...
They refer directly to "men", or "man", use masculine pronouns only, etc..
Do you need a different stream for women? Or even optionally tweak the gendered words on the fly?
I'm not sure if this was just a random sampling, but it really struck me, just scanning down the list on the front page....