Henry has heaps of experience and it shows in his music.
Where this tutorial falls a little short is apparent in the 1st seconds and carries through to the end: his voice recording is full of room sound. I usually turn off when someone is talking about recording but fails to record their voice/narration/voice-over correctly. I persisted because this is Henry & I know he can do better. It's ironic that he actually talks about just this problem.
After that his insistence on a DAW is misleading. It's what works for him BUT plenty of people do pro sounding vocal recording to tape, to stand alone HDD/SD/RWCD etc. devices. Access to a long & varied effects chain is probably why Henry's enarmoured of a DAW for vocals but many "stand alone" machines have these - though "tuning" is probably not available on a note by note basis.
After 5.15 he talks about very complex things "vocals sit nicely", EQ Carving" etc. without explaining them or linking to a video/article/chart that does.
Reference tracks are useful IF trying to sound like something else...the Reaper Frequency Matcher *takes that a step further and is well worth looking into for treating a single instrument, a vocal track OR a full mix.
I suppose this is more an advertisement for Henry's channel and the many, varied and detailed tutorials he provides there.

* This free JS Reaper VST allows one to get an EQ/gain/dynamics etc. profile of a user's song or individual track. The users does the same with a reference song or track, (access to isolated tracks from classic songs is pretty easy to come by these days), and saves that as a preset. The reference preset can be open in the VST on the user's track and then "correction" applied. This can give a vocal some David Bowie nuance, a guitar some Mark Knofler tonality or a mix the overall mastered sound of Pink Floyd etc. Mileage may vary but, in general good quality reference tracks help achieve the best results.

Cheers
rayc
"What's so funny about peace, love & understanding?" - N.Lowe