In my opinion Richer Sounds have done nothing but good for the hi-fi industry by offering very good prices on budget hi-fi, getting separates into the high street and I'm sure they've started many folk on the audiophile road. They're also under no illusion about what they sell - budget components at low prices.
My first new hi-fi component purchases were made in Richer Sounds in the early nineties when I finally had enough money not to have to buy second hand. I went down a familiar route; Sony CD player, Kenwood amp and Mission speakers - a 'get me started' system which I got for a couple of hundred notes including a proper interconnect and some speaker cable (you've guessed it - QED 79 strand). This system got me into a hobby that remains at the top of my hobby tree today and it's all because RS was a way I could afford 'proper' hi-fi at the time, I got very decent sound quality for not much moolah and I resultantly discovered that component swapping was half the fun.
I still have my little Mission speakers that I bought years ago (they're the rear channels of my cinema system), my Marantz decoder was also purchased from Richer Sounds eight years ago even though at £1,500 it wasn't quite a budget component and the most recent item I got from them was my Panasonic 50" plasma - they were £400 cheaper than the next nearest price!
Do Richer Sounds reduce credibility of the brands they sell? No. Marantz are still well regarded as are Sony as are Mission as are Kef etc etc. As RS only sell the budget end, the top end (and the audiophile's opinion of such) is unaffected by their existence in my opinion. Most of the audiophiles in my age bracket will have bought their early hi-fi there and a lot will have no doubt climbed the ladder so to speak. For some of course, RS is as high end as need be, and therefore a great place to buy.
Lounge:
Samsung QE65QN80F 65" QLED TV
Echo Link streamer
RME Audio ADI-2 FS (AK4493) DAC
XMOS DSD Async
Emotiva A2+ power amplifier
Neat Motive SX1 speakers
Van Damme 4.00mm tour grade speaker cable
Nakamichi Fanlock banana plugs
Chord Clearway XLR interconnects
Audioquest Crimson USB interconnect
QED Quartz Reference optical interconnect
Studio:
2022 MacBook Pro 14" M1 Pro 10/16/16/16
SMSL DAC
Modified Fosi P4 preamp
Adam Audio T5Vs
Fenton 10" active sub
Roxel RBS 300s
Several valve preamps