Just had a short watch and I second this opinion.
When you're exploring Modes, it's best to keep things simple as much as possible - and the Topic really isn't actually as complicated as people enjoy making it
If you want to play/understand the C Dorian Mode, it's good to first know which Major Scale it comes from & which Mode of that Major Scale it is.
Dorian is always the 2nd mode of any Major scale (I.e the scale that you get when you start its Major scale from the 2nd note in)
The Major Scale you'll want to know is Bb Major, as it's second note is C. The scale pattern you shared above is what you'll want to use as all the blackened notes are your C Root note for your Dorian Mode.
One other useful thing to do of you want to get the most out of the Mode is to understand its 'character tones' - these are basically notes that if you play in sequence, give off the 'sound' of Dorian.
For me, I always think of the; Root, 3rd, 6th & b7- or the 1st, 3rd, 6th & 7th notes of the scale. The 6th is the most important character tone, as this is what makes the scale Dorian versus just Natural Minor (that scale would have a b6).
The next thing you'll want to do - this is what will really solidify the Mode in your hands & ears - is to go to Youtube & search 'C Dorian Backing Track'. Play along to as many as you can, while trying to target that 6th note character tone and all the rest, to get your ears used to the sound
Just enjoy creating in the Mode at this point and let your ears help you take in it's character.
Hope this helps! If you have any other questions feel free to DM me