AFAIK it's still pretty much the only realistic way at present to output digital files to camera (color) film that's sort of within reach of small-scale users and amateurs. I think that makes all other considerations pretty much moot - although they can be a cause of concern.
As to burnt CRT's - I'm sure some kind of CRT must have burned out somewhere, sometime. But as electronics go, CRT's are pretty robust. Common failures around CRT's are the high-voltage circuitry, in particular deflection transformers. Those are/were notorious failure items on e.g. computer monitors.
Thank you Koraks. Are the transformers easy to replace and do you think it is wise to buy one recorder and then another one when it surfaces for spares ?
In other words, are they repairable by electronicians when you have spare parts ?
How much would you pay for a used one considering the « risks »?
NB I have used a lasergraphics recorder recently and the results were good though they needed colour correction in the slide projector. Also maybe 8k would be better for 35mm slides as 4K is good but a bit soft compared to « native in-camera » slides.