Yep its the "enthusiastic amateur" syndrome.....
I'm sure we've all been there but this guy seems to have gone to extremes. Pretty sure this is going to end in tears a couple of years down the line.
As an aside in the current cold weather I've found that the best way to run our (shit) Baxi (don't touch with enormous bargepole) combi boiler is to turn the CH temp down to 55C and bump the thermostat up to something stupid which will never be reached with the low output temp (26C in my case).
The result is that the boiler pumps water around CH constantly but burns very little gas. Having the CH temp at 55C rather than 82C means the rads run at a much lower temperature so its background heating. There is constant demand from the thermostat, constant water flow and hence the TRVs on the rads actually do what they're supposed to.
I realise this low return temperature negates the benefit of a condensing boiler for CH but in my case (and maybe a lot of other people too) it makes sense. You still get the efficiency for DHW anyway as its a closed loop within the boiler. It costs 4 units of gas/day for a 4 bed house and you have a temperature which is 21C +/- 2C constantly.
The alternative (82C CH output) means that the rads get very hot, thermostat turns off (it has to be set sensibly with full boiler output temp), turning the boiler pump off (after a couple of minutes of no demand) . This means rooms that are hot, stay hot and rooms that are cold stay cold as there's no continuous CH water being pumped.
TRVs were designed for constant heating situations - eg Scandinavian (and bits of the USA) metropolitan areas where you don't have control over the heat source . They weren't designed for intermittent UK heating and they make zero sense for a combi condensing boiler where the CH return temperature is fairly critical to achieving efficiency figures.
Works for me, worth a try I feel but YMMV.