According to your example anyone with a Download rate below 3.5MB/s would still benefit from the compression. The 4-8x is also a lot of BS, assuming 10MB/s you’d be looking at 3x. For 4-8x you’d need 12-24MB/s. It’s pretty ignorant to assume those speeds are common, let alone the standard for most people.
Besides what kind of potato CPU do you have that it takes 1.5hrs to decompress a 56GB repack? A quad core from 2013? That’s about how long it takes to compress that amount of data to that extent, decompression is usually a lot faster.
Edit: looking at your screenshot instead of just the text, my quad core assumption was right on the mark.
Pretty, hypocritical to assume metropolitan internet speeds paired with a potato PC to make your point seem better than it is no?