DVI and HDMI are actually the same video signal. Which is why adapters are so cheap.
DP can carry an HDMI encoded signal (and thus a DVI signal), which is why DP->HDMI and DP->DVI adapters are so cheap. It’s called DP Dual Mode or Multi Mode or something like that.
I haven’t encountered a device that outputs DisplayPort that cannot output the Dual Mode HDMI encoded signal as well.
HDMI/DVI->DP is an active conversion - ie it is re-encoding it. Which is why the converters are significantly more expensive.
However, it’s all digital. If the signal quality degrades, it will be very obvious because it stops working (sparkles on a black screen, lines, flashes, all sorts).
The 2nd quote does.
They are investigating, and don’t want to list anything because it’s all up in the air.
If they listed alternatives, the discussion would be based about them, the pros/cons etc. They also explicitly state they don’t want suggestions.
This seems like a formalised information post about previous discussions, rather than anything concrete.
Whatever backend/service they use will also dictate the app used to access it.
For example, if it’s a forum based software then jerboa isn’t going to be able to interact with it at all (as jerboa is specifically for lemmy).