Well for me the number 1 objective of an audio component is "how does it sound?". So that's the first thing to address and get right. Pro-Ject specifically wanted a small footprint package (Their "Box" concept). Adding an internal LPS they reasoned is inevitably going to increase the physical package (Which they are seeking to avoid).
So they went the route of external LPS for those who desire this option. Keep in mind as I and other owners and listeners have pointed out, sound quality with the wall wart is excellent. So the LPS is not mandatory for excellent sound quality.
A number of users have acquired Pro-Ject's own LPS or the LTA (Linear Tube Audio) LPS with excellent results. I opted for the Fidelizer Nikola II LPS and the pairing is divine.
So owners have used different brands of power supplies with terrific results. This flexibility is an additional asset. I listed the expensive transports as a reference point if they want the Stream Unlimited CD Pro-8 unit. These types of high quality CD drive mechanisms are the heart and soul of a transport.
There is currently no other CD transport anywhere near the cost of the RS2T that utilizes this latest technology CD drive unit. That's a very key point. Look, I understand no matter how good I or someone else believes a component is, it is not going to please or be for everyone.
Maybe the Pro-Ject simply is not what you're looking for, easily understood. There is a wide market for other transport choices. I feel that based on my actual listening experiences and direct interactions it is a marvelous sounding CD transport. YMMV as is always the case with audio related matters.
Charles