Are those as High Quality as Bros? He said they were injection molded versus cast.
Keycaps are as high quality as their finish and the subject being rendered. If you LIKE the style of a key, that greatly increases its aesthetic value.
Many artisans like to use the highest quality thermosets they can find. I love to use high quality resins because they get the look and feel I want, but it's not advertised because these are not meant to be abused, and if there are visual problems with the key it is more likely an issue with the sculpt/mold than the quality of the plastic.
I think your question is assuming a few things like, Brocap quality sets the standard for artisans. That is very subjective. The next assumption is that an injection molded key would have questionable quality. While it is not hand mixed and poured plastic, it has its own challenges strengths and weaknesses. I'm not saying HKP are injection molded. That's not information to which I have access, but please be a little wary of material/process hype. Support the artisans you like and want to see prosper.