'Upgrading' parts should be done with care. Power supplies might become unstable if the ESR of the output caps is much lower than original. Replacing ancient NE5533s with modern opamps may also degrade performance if the design engineer did his job and optimized the design for the NE5533, like in some audio analyzers.
Replacing electrolytic caps with crappy ceramics may or may not be an improvement, depending on the design. ESR will be lower (this can be good or bad, many LDO regulators are not stable with ceramic output caps). Decreasing ESR increases the Q of a system, not very desirable if it's prone to oscillation. Capacitance may be lower with a high DC bias.
Monolithics are hardly crappy!
Small value Electros drop radically in capacitance,anyway,so even with any small difference due to a ( Hardly high!) DC bias, Monos will still be better!
If the circuit is prone to oscillation,it is poorly designed in the first place!
Most places where small electros are used are not extremely critical,anyway,but the monos do not lose capacitance like old small value Electros.
I have done this type of replacement for many years.
Originally it was by necessity,as new Electros are rarely the tiny ones used by OEMs & don't fit,& I've had bad experiences with Tants.
The Monos have done the job with consistently good reliability in all cases.
In power supplies,if the original caps have cooked,& every other comparable supply uses lower ESR caps,I would take the chance on
instability,compared with the certainty of cooking high ESR caps.