Not at all. I find no reason to fire up my base X1 since I have a PS4 Pro (or when I had my base PS4 for that matter), but my Switch gets just as much love from me throughout the year. Depends on my gaming needs at the time. Hell soon I will be firing up my VITA for Persona 4 Golden.
As long as there are exclusive games to play, there will always be a reason to game on multiple platforms at any given time.