For example, consider the construction of the laser interferometers used to observe gravitational waves. [...]
Please familiarise yourself with the phenomenon of electromagnetic acceleration.
You really are serious? What about a little evidence that such a phenomenon exists?
Mind you it seems to be still the same old thing! The earth looks flat, so we have to bend (literally in this case) everything else to suit.
Even your "dark energy" is just magic conjured to explain UA,
which is just more magic to explain your denial of the Earth's gravitation (gravity),
and this denial is necessary to explain the observed gravity. But, it does not do it convincingly! Real gravity varies with latitude, altitude (as 1/r
2 where r is the radius from the Earth's centre) and with the proximity to massive objects (gravimetric prospecting).
Yes, I have read up on your wonderful EA! All to explain away the simplicity of the sun actually setting behind the curve of the Globe - simple!
Mind you there is another need for magic (EA) when someone finally realises that at the equinox (on Mar 20)
the sun will rise due east everywhere on earth,
except at the poles which will have 24 hour daylight. Explain that on the flat earth even with EA and all the other magic you can muster!
All magic and guesswork to explain the first incorrect assumption (the flat earth).