Absolutely this.
If I am in the congregation then I can worship. If I am playing, running the sound desk or manning the video feed then it's work and that is what I am concentrating on. Even if the band are in full flight and you can hear the spirit moving in the congregation, if I'm on the desk then I am listening and making sure everything is working, not participating. Which is why too much time supporting is draining.
The only time that is different is preaching. That isn't work in the same way as all the prep is done and then it's up to the Lord how the delivery shifts depending on the unknown needs of the congregation, and then there can be a very definite sense that one is delivering God's words. I imagine if I was as experienced playing bass then the same could be true of playing, but I don't think so. Preaching is being a channel for the spirit, all the physical aspects of worship are, for me anyway, enablers for the congregation.