It appears that "speaker sound quality" might be the Pixel 5's equivalent of the "blue shift screen" for the Pixel 2XL -- a deal-breaker for some, but an immaterial issue for others. I bought the P2XL even though it clearly had the "blue shift" effect when the screen was tilted. The "blue shift" was something I stopped noticing or caring about within a couple of days. Meanwhile, two-and-a-half years later, my P2XL is still functioning flawlessly, running for more than a full day on the original battery, and producing spectacular photos -- which, ironically, look so stunningly beautiful on that same "defective" display that they routinely elicit complimentary "oohs and ahhs" when viewed by others.
If there's one lesson I've learned from following the discourse on this forum over the past few years, it's this: No one is going to deem any phone to be perfect in every respect. If you're going to be dissatisfied with the device because some feature is not included or is not up to the standard of quality you desire, the sensible course is simply to purchase another product, assuming you can find one that will better serve your needs. But if the device is one that you believe will prove to be a comfortable fit and fulfill your normal usage requirements, despite the fact that it may be lacking in one or more respects, you'll be much happier to shrug off those minor shortcomings and just enjoy the benefits of having a phone that is, on balance, the best available for you.
I'll be sad to put my P2XL out to pasture, but based on my usage requirements and personal preferences, I anticipate that the Pixel 5 will be a great fit and a delightful device to serve me for the next 2-3 years. YMMV.