There is nothing wrong with downloading a torrent just to set up a dedicated full-node. But the torrent must be the complete data folder as it is with no modifications or compression, with a fixed version of bitcoind. So it will be much more faster to just download it to actual data folder and avoid validation. The torrent can be launched and maintained by some group of trustworthy members here on the forum, who can also compare it with their own full-nodes. No need for constant updates, maybe one in 5 to 10 years.

I made a backup of the data folder at july-2024 to an HD, so if for any reason my full node become corrupted, I just need to repair it, restore the data folder from the backup point.

Its handy for those with old or low-performance hardware, taking less than one day instead of months for the IBD.