Of course, totally agree.
However, let's not forget that before the Speakon was introduced in the late 1980's, 1/4" jack ( and occasionally XLR) sockets were
used by everyone, including big pieces of kit (200/300 watts) manufactured by Ampeg, Marshall, Sunn, SWR, GK etc.
Was just making the point for the OP though, that using a jack connection on one end of a speaker lead for his purposes is not going to be a problem for him.