It is.
No, this is the perfect solution. I do this for installs all the time. Starlink Router with Ethernet Adaptor into a small switch and then access points out of that. I primarily use TP Link access points (which offer indoor and outdoor devices) which work very well. Clients and customers are very happy with that solution.
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Overall, you need to have some sort of a weather protectoed/proof area to protect all the starlink core equipment and anything else you might have hooked up (switch etc)