Also several other active monitors brands exist which have products operating without problems for decades and are even able to service them still today, for example Klein+Hummel (now called Neumann) and Geithain.
K+H i know, i use a K+HO300 since 2009. not me but Woofer, mid and power amp broken . the unavailability of parts makes repairs hazardous but not impossible
I had to finish the calibration of my O300 and Sennheiser France refusing to help me
Neumann i know, i use a KH420 since 2017. Neumann sold models with a flawed medium. The noise generate the medium should never have let them leave the factory.
https://www.aktives-hoeren.de/viewtopic.php?t=9650
I bought a pair of demos to be on a working speaker. it's still very good speakers
KH 120 same fight
do not peddle legends about speakers and brands of which you will ignore the experience