Version:
Minecraft:1.16.5
Forge:36.2.39
Mowzies mob:1.5.27
The damage will always keep in the default value.Though, if player uses sunstrike as the mod expected(I mean ,right-click with empty hand and do not use /summon), the modification will come to effect.
The animation of the attack does a lot in the performance, but the damage would make it a bit funny.it's much appreciated if you make the config file work more accurately.

The config file has two damage scalers for the sun’s blessing. One for players and one for Barako. Without an attacker, which multiplier do you expect the sunstrike to use?

Both or even a new value are good, though I think the one for players may be better, since people usually summon a sunstrike to target somthing other than themselves.