You can connect a keyboard to an iPad and there are Lr and Ps versions for the iPad which are included in the basic Photography subscription.
I happen to have all of the above but I don't use them because I have now decided that I hate iOS with a passion and so I prefer to take my little 13" MacBookPro everywhere with me instead! The MBP is not much bigger than the iPad but it does so much more.
I do use the iPad Pro for a few things: mainly to yell at Alexa to turn on the Espresso machine and to turn lights on and off; and I do use the iPad as a Timer or Alarm Clock.
I also use it as a giant viewfinder to drive a camera by remote (which was my main reason for buying the iPad) — but I don't use it for too much else.
Excellent Espresso however!
None of the AMUG folks I know are happy about the upcoming move to make MacOS more like iOS. However, Apple has no problem ignoring us. One might call it a standoff, except that Apple will proceed in spite of our posing opinions, so it's not really a standoff, it's a done deal as far as they're concerned.
The only wars where our side enjoys any victories worth mentioning is the one with the always ready to take control Alexa. Yes, we have the wall plugs that offer Alexa compatibility, but they remain in their unopened packages. Considering Alexa's history of unrequested vocal interruptions, including breaking silences for no apparent reason, there's no way she gets control of the lights, much less our beloved Espresso machine!
Tim Cook could use a double Espresso, with a shot of Sambuca, which might wake him to our displeasure.You get Alexa to swing that one, and I'll install the wall plugs for her.
Meanwhile, Alexa does a good job of getting my calls to "add wine to the shopping list!" over to our iPhones.