I also live relatively near to Matthew.
Here are some observations.
I've not had much trouble on the roads, but then I am paranoid about things like side-roads where I assume that drivers aren't going to look before pulling out (and it's amazing how many times my paranoia is validated!) etc. I try and not let things annoy me too much, such as drivers feeling the need to overtake me downhill into a village when I'm doing 28 in a 30, and a lot of things on Matt's videos wouldn't concern me at all; for example the van driver without a front number plate.
BumblingBee isn't a troll, or at least he is truthful about having cycled from Rhyl to Towyn as his comments about wind direction and road surface are correct. His advice to stick to the cycle paths amused me though, as this is where I have had most of my problems. There are a huge, no exaggeration, number of people (over 50 and female mainly) who seem to openly resent cyclists. I always slowly pass walkers, which often isn't greeted with any appreciation, and only allows me to overhear some of the mumblings.
Here are my three favourite cycle path incidents from the past 6 months:
1. Colwyn Bay prom. A green cycle path is painted down a wide promenade, I am cycling down the cycle path and a woman is walking towards me, also, on the green strip. I carry on assuming that she will move off as I approach, as I near her it becomes apparent that she isn't going to move, so I move off the path on to the prom, pass her, and return to the path and carry on. The woman's response is to turn around and shout after me for not using the cycle path?!
2. Llanddulas. A woman is standing on a grass bank next to the cycle path, as I approach. Suddenly, without looking, she walks backwards, down the bank in to the middle of the cycle path. I'm travelling quite slowly, as the path is busy, so move to the far side of the path to avoid/pass her. She clasped her hand to her chest, gave an exaggerated 'ooh', and demanded to know if I had a bell. I questioned whether she would walk backwards in to a road without looking... No wait, I unloaded with some expletives

3. Old Colwyn. There is a long, straight, flat, path separated down the middle and the cycle half painted green. I am on the green strip, and I can see half a dozen walkers across both lanes 200m in the distance. They see me and they all move over to their half, and stop. I carry on, but when I get 20m away one of the mad old bats walks out in to the middle of the green cycle path, crosses her arms, across her chest, and stares at me. Being used to mad old bats, I pass her on the very edge of the path. The mad old bats friends then start shouting about bells, I try and explain that bells are to alert people to your presence, and they were already aware of my presence so the bell was... no wait, it was expletives again.
I also mentioned to Matthew, on YouTube, that posting a video of his house was a bad idea. Being from the same small area of coast as Matt, where having a cycle cam is unusual, I had a bit of fun watching all his videos of the same roads I ride. I typed Monkeysnutscom in to Google, initially as I thought there would be a site called monkeysnuts.com, and from there you can find his real name. There is another video which shows Matt's commute, and ultimate end location. As a bit of a saddo, I also follow all the active cyclists in my area on Strava (it's not many), so there's more information there. This is way too much private information to be willingly giving on the Internet. I have found all this information innocently as a member of the local cycling community, and it still sounds a bit freaky. Sadly, it is hard to get rid of these Internet footprints, but at the very least Matthew should be trying to delete that Twitter account, which isn't even in use.