$1,349.00 for a LHY SW-10 is a hell of lot to spend on something that might not make much or any improvement. We’d probably all go broke it we adopted the recommendation to try for ourselves.
the sw8 and the english electric unit are under $600 msrp, less on used sites when they appear, etherregens regularly trade for $500, and so on...
like anything else, if you care enough you will figure out how to try something to see if it makes a difference
and then, there are certainly money-smart and money-stupid ways to try things...
high end hifi is a pursuit that does require money, time, effort and know-how to achieve a high level of performance
https://twitteringmachines.com/a-list-of-audiophile-network-switches/