electronic scales are sensitive to electromagnetic emissions.
older flourscent lights (usually the big fat 1.5" T12) are run by magnetic "tar" ballasts. They're unshielded magnetic coils basically.
Modern flourscent lighting is run by ballasts that employ induction coils instead of magnetic coil technology. their electromagnetic emission threshold is significantly lower than the older style units.
LED is even less likely to produce EM emissions.
so its not just that Flourscnets are generally bad... just that some can cause problems.
Which helps explain the mixed reports you see out on the web regarding lighting (and other devices) in relation to their digital scales.
https://www.doityourself.com/stry/whats ... ic-ballast
HTH