That obviously should not be happening. Is you Wifi network set up with the 2.4 Ghz band? If it is, change it to the 5Ghz only band on your router and shut off auto-Join to the 2.4Ghz network and connect to the 5Ghz network. The 2.4Ghz band cannot handle more than a couple of devices before inference start dropping connections.
Even with a dual band router that can offer a connection on both bands, what will happen is that your phone will connect at the 2.4 Ghz band first if you are coming home. Once connected, to a band, they will not switch to another. The reason this happens is that the 2.4 Ghz travels a greater distance at a slower speed, while the 5 Ghz travels a shorter distance at a faster speed. When arriving home it will detect the 2.4 Ghz signal first since you are coming from farther away.
There is no reason why your HomePods should not be working reliably. I have had my OG's since they first came out as a stereo pair and have never had to reset them.