Do I Really Need a Dedicated Streamer?

No need for you.

My experience is that a dedicated streamer running into a good DAC will not improve the sound quality if streaming Spotify...but that it will improve the sound quality if using Tidal or Qobuz...quality of the streamer only matters if it’s being fed a high quality source...in your situation, I don't think a dedicated streamer will improve sound quality...

Ok, I’m gonna answer your question directly.  I started streaming with my iPad and it sounded fine but CDs sounded better by a good margin and I was disappointed.  The good folks here encouraged me to get a streamer, so I got an inexpensive iFi Zen Stream (with upgraded iPowerX power supply) and the difference was literally night and day.  Bottom line — the iPad is a crap streamer and you don’t know what you’re missing.  Further, my guess is once you have the better resolution with a streamer you’ll hear greater differences between services like Tidal/Qobuz and Spotify.  If you don’t like the selection on Qobuz maybe try Tidal.  In any event, don’t fool yourself into thinking the iPad is ok as a streamer because it absolutely is not and it’s greatly compromised.  

Thank you @jl35 and  ​​​​​@soix .  Very clear and appreciated.  

I tend to disagree with @jl35 a little bit on this.  While I agree Tidal/Qobuz will sound better than Spotify given good enough equipment, my improvement with a streamer over the iPad was so large I have to think you’d still notice a significant improvement even using Spotify.  Just a semi-educated guess given my experience.  FWIW.