I would take somebody to task on that perspective because I strongly don't feel that way. Hell I don't feel that way about a few other cameras out there that aren't RED either. Komodo in particular due to the new CSF and likely other things clips rather nicely for instance.
Generally, much like REDCODE RAW we've known for so long, there are going to be differences between various compression ratios. Particularly if you're filming a scene with high frequency detail like a forest with tiny leaves and twigs or lots of tight macro fabric patterns or whatever.
I've been sort of the dude saying roll at the lowest compression ratio if you can for the longest while now. Generally in the world of DSMC and DSMC2 cameras, 5:1 through 8:1 were/are the most common for professional narrative work and I'd say higher to mid range commercial jobs. To that point I'd say focus on filming in HQ or MQ most of the time unless you really need to roll long or save on media. If that's the case, LQ is there for you.
Then again, if you're filming 6K for a 2K finish, well, then that's something to mull over further I imagine as the downsample will help further there. 6K for 4K or 5K for 4K or 4K for 4K, well yeah, personally I prefer HQ or MQ most of the time.