Matter is still mostly irrelevant and the current trend doesn’t give us any indication when/if this will change. Good to have the support in a hub but is the least important for making this work today.
As for HA, that is the best bet in general if you want to ensure the broadest range of support of devices but you need to be a person who has the desire to get into technical bits, and spend a notable amount of upfront time learning, as that can be required. It is currently much, much better than it has been but HA is still not a fully plug-it-in-and-go general consumer device.
If all you want to do is control your blinds remotely, I’m assuming they have an app for them for your phone. Others can be more helpful if you specify what the blinds are, what other things you currently have that are connected/smart that you want to control, how you want to control them (schedule time of day, specific event, etc) what your phone and voice assistants are (if you have any), and what you think you might want to do in the future.
of course they push them because they want folks to buy more of their product.