Personally, I didn't see any 'bullying'. I went back and watched this on YouTube when the first bullying comments were made earlier and although MM is trying his best 'Del Boy' impersonation, the quips and jokes were with Alex, not at him. I never got any impression of Mason lording it over Alex, but more his jesting with him and the subject matter, which could be perceived as 'boring'. Apologies to any bedding enthusiasts!
I see AK said earlier he didn't feel bullied. I didn't perceive any of it as bullying, just tongue-in-cheek joking about AK's earnest interest in bedding & pillows.
The 'falling asleep' was pre-empted by MM himself before the preceding break and was a joke at how AK was going to give the full technical explanation of the pillow after the break, which he did (never heard the pockets described as cassettes before) and how AK could spend hours talking about it.
His feigned sleeping when AK began describing the pillow technicalities was a joke like somebody commenting on another's perceived 'boring' hobby of philately or numismatics or train spotting. He was joking about the 'obsession with pillows' and the in-depth explanation AK can give and is enthusiastic for, not insulting Alex himself, not denigrating him, actual or implied, nor insulting his character. Other comments MM made implied his respect for AK and his knowledge and enthusiasm.
Sometimes I think you guys are ultra-sensitive when trying to critique this shower. There are many examples, as attributed, where they do cross the line, take liberties, misspeak or tell mistruths, but on this occasion this scenario, to me, did not appear as overt, nor covert bullying and a misread of the attempted humour and MM's attempted entertainment 'schtick'.