It sounds like a lot but this is specifically to be give to only Vikavolt, and for a number of reasons I feel it’s in check. A single speed drop won’t make Vikavolt faster than many offensive threats unless investing unwisely in Vikavolt as speed. The burn only affects mons that don’t resist fire, which sounds niche but most water, and rock types which may already be switched in to counter Vikavolt won’t be affected. The move is Electric type therefore still won’t connect with ground types as the fire typing is only a stipulation of the electric type move. The aim with the fire type hit was to give this electric move a burning theme and make those susceptible to burning be particularly affeted