Gaming voice chat (discord/teamspeak/other, not in-game) solved it way better than just push-to-talk. Voice activity detection, adjustable voice gate thresholds (open and close), echo cancellation, background noise removal, individual person volume settings, adjustable application attenuation.

From my perspective, Zoom's one and only benefit is how easy it is to share a link and get into a video chat. Everything else about it is painful to use.