The older Vortex Razor line (grey bodies, like the 20-60x85) were also made in China.
I owned the older Razor and also have looked through the Burris Signature (I assume that’s the product you’re asking about) and the glass seemed largely identical.
The Burris has some nice refinements, primarily the rail for adding a small red dot to aid in fast target acquisition and the actual availability of reticle eyepieces.
I would have no qualms with owning the Burris as it’s seemingly very capable and the old Razor line (that I assume are identical) never seemed to have any issues.
Thankfully with spotters you don’t have repeatability or turret issues to deal with, just the optical lenses, glue and bodies....which the Chinese are seemingly very capable of assembling with little issue.