Yes, solo artists have trumped groups in popularity, which is particularly demonstrated by the charts.
Billboard reported on this topic, sharing "And on today’s Hot 100, groups are an endangered species: Since 2018, groups account for less than 8% of all top 10 singles. The last ensemble to summit the chart was Glass Animals with “Heat Waves” in March 2022. No group scored a top 10 hit as a lead artist in the first half of 2024, and there is not a single group anywhere on the latest Hot 100."
https://www.billboard.com/music/features/how-groups-disappeared-from-the-hot-100-1235734245/