Bearded female dwarves were a non-entity in the entire writings of Tolkien, getting at best a single line or so. There were no beloved female dwarf characters, no stories featuring them in any way, nothing for anyone to be attached to aside from one or two brief lines over several thousand pages. The idea that not having them in 'waters it down' or reduces it to 'generic fantasy' is ridiculous as is all the faux outrage over this. The changes Jackson made to characters like Aragorn (he's not reluctant to fulfill his destiny, nor besties with Legolas), Gimili (turning him into little more than comic relief) Faramir ( giving him daddy issues and making him unable to withstand the lure of the Ring as he did in the book) Merry and Pippen (making them, like Gimili, overly goofy comic relief) are far more egregious than bearded dwarf ladies. Yet everyone is okay with that.
It's not so much that you might not have bearded female dwarfs as it is the possible reason they might not have them. If it's done just because they think the women would not be sexy enough that would be a warning sign that maybe they are worried about mainstream concerns in bringing in new fans and if they are doing that does that mean they will be dumbing things down so as not confuse the audience.
Meaning the show will look good and likely be well acted but it will appealing to whatever the fantasy sound effect to pew pew pew is. Is this going to a fantasy adventure with some drama or just a action show were the characters aren't really explored much because they are more interested in moving from one action set piece to another. Of course this is all just something to be worth concern about. Not something to get to cynical about just yet. It could be all for nothing in the end.