Yeah, but it's pretty basic these days and quite standard across many websites.
I honestly wouldn't think it was a consideration at all in terms of performance.
If you have enough groups to worry about performance on very small 2x retina logo images for each group, then your website is large enough and active enough that your server can handle it.
The payoff in better quality is well worth it considering half of users are on mobile, nearly all of which have retina screens these days.