Are there any disadvantages to ready-made acrylic fillings?

What are the advantages and disadvantages of ready-made acrylic putty (putty) compared to gypsum putty?
Short drying time during application (usually no more than 30 minutes), as well as the difficulty of sanding and polishing. Now the advantages:
ready-made acrylic putty is sold ready for processing and use. This significantly saves time and energy.
Excellent protection of the treated surface from external factors;
Acrylic putty is very elastic. After drying, it forms a fairly durable coating;
Dried putty prevents water from penetrating, but has good vapor permeability;
It is a clean and harmless product, fireproof;
It is easily applied to the surface and creates a single strong structure.
Ivey presents YAPRAK AKRILIK MECUN – ready-made facade putty