That claim is, simply, a lie. Stop lying (or ignörantly repeating others' lies). It doesn't make you look good.
I find it rather bizarre that you follow the monumentally stüpid phrase
just a theory with the scientific definition of the word
theory. You obviously didn't read what you quoted.
Try pushing a pencil off your desk. The chances are that it will fall to the ground. This is due to the operation of a force known as
gravity, of which you may have heard. Gravity exists. It's a fact. The
theory of gravitation is an overarching explanation used to explain that fact.
The evolution of life is, similarly, a fact. It happened, and it still is happening. It has been observed in real time, and it has left many many traces in the historical record. The
theory of evolution is, as you yourself said, a model which serves to explain all the observed facts of evolution. It's beautifully simple in the grand structure, but detailed enough to be endlessly fascinating. It is, also, rather better understood and better supported than the theory of gravitation.
TRiG.