Android IS more customizable than iOS. Though, I'd ask yourself what it is that you want to customize. Unless it's more a matter of principle that you want something that gives you greater flexibility in general.
This is very subjective. You don't have AirDrop or iCloud Drive, but if you use Google Drive, Dropbox, or OneDrive as your primary vehicle of sending files to and from devices, you won't really be impacted too much by this. You will lose the ability to answer phone calls from your Mac (or any other Apple device) as well as to send and receive SMS/MMS messages from your phone via Messages. Though, you might be able to do so via a web app. Not sure. Your iCloud e-mail will work just fine on your phone. Contacts and Calendars may be iffy, unless you use clients that support adding those accounts manually, though that could be tricky. If you were using Gmail instead of iCloud for storing your contacts and calendars, integration between your Mac and an Android phone such as the S23 shouldn't be that much of an issue.
Other than that, no big deal, really.
Your AirPods Pro can function as a normal pair of bluetooth headphones. You lose on instant pairing and some of the other features that Apple has that are unique to using them with other Apple devices. But they function otherwise with non-Apple things.
Your Apple Watch requires an iPhone to update and sync. If you kept your current iPhone around, you could still use your Apple Watch, but you're not going to be able to sync anything to the Android phone. Furthermore, unless you connect the iPhone you pair your watch with to a WiFi network, your watch will not know to connect to a Wi-Fi network and just be useful for fitness tracking and whatever apps you have that don't require Internet. It's honestly a crap situation for Android users that otherwise want to be Apple Watch users. For all the good Apple claims it does by saving lives with the Apple Watch, the obvious footnote is that it only cares about saving iPhone customers' lives.
The Apple TV is not really dependent on you owning an iPhone in any way, nor any other Apple product, for that matter. That initial setup is made a lot easier, and both iOS and iPadOS have built-in Apple TV remote functionality, but none of these are must-haves in order to use an Apple TV.
Apple TV+ doesn't have a dedicated app you can use with Android. You gotta log in on the web. Incidentally, of all of the devices that Apple makes on which you can watch TV+ content on, the iPhone is the least comfortable for long term viewing.
