Thanks for the reply.
I actually tried a different brake with the same results. Ie unable to bleed so yes I believe something is wrong with the shift lever itself.

New frame just popped up on Speeder Cycling's site today. Looks good, but we only get to see a render for now.

https://www.speedercycling.com/Carbon-Integrated-Road-Disc-Frameset-SC-R55D-_p429.html
Material: Toray M40J T700 / T800
Type: 700C Road Disc
Appearance: UDM
Finish: Gloss / Matt (can offer custom painting)
Headset: FSA NO.55R ACR 1.5" Fully-Integrated
BB: Press Fit BB86.5*41mm
Standard Weight: 980g+/-35g (51cm)
SL Weight: 880g+/-35g (51cm)
Frame Size: 45cm / 48cm / 51cm / 54cm / 57cm
Handlebar Size: 370mm / 390mm / 410mm / 430mm (C to C in hoods)
Stem Size: 85mm / 95mm / 105mm / 115mm / 125mm
Cable Routing: Full Internal
Di2 Compatible: Yes
Disc Mount: Flat Mount
Max Tire Clearance: 700 x 32c
TA: 12x100mm / 12x142mm
Test: ISO 4210
Warranty: Two Years

If it were me, I'd try to isolate the faulty component as a first step. I can't quite make out what you are saying in the video so ignore this if you've covered these steps already.

First, remove your rear wheel and the brake pads to avoid contamination with mineral oil; next, disconnect the brake hose from the caliper. Then try to move some mineral oil through the caliper with your bleed kit. If you can't, you know the brake is faulty.

If the path internal to the caliper is clear, either the hose is blocked (unlikely) or the hydraulic module within your shifter is borked.

Thanks, I will definitely double-check.
My rides felt normal otherwise but the brake power has quite some leverage through the fork, right?
Did you "feel" anything while riding?

I did not feel anything while riding, but the fork began to "stutter" when braking. I also thought it was the brakes, but it appeared to be the play in the headset. It was a very small amount of play.

It has serials - I don't think it's a problem of identifying their own product but rather they've come the decision that the purchasing retailer/channel is who would handle warranty issues.  For my issue with the adjustment screw, the AliExpress seller was happy to deal with it, I just had to get it back to them in China.  I ended up just fixing myself.

Definately will limit acceptance outside of Asia until they can improve servicing globally. Unfortunate.    It will be a small niche of people like the ones in here willing to accept the servicing hassles that will be buying.

Yeah, especially with electronic... When you buy a Chinese mechanical group, a lot of the times you can replace the parts with Shimano or Sram when something is not right... If your Chinese electronic group fails you could be out of a bike for 6 weeks...