I think the point of indie games is that they act like a buffering zone between AAA releases so I think they are still relevant, some are even better than AAA releases imo
Not everyone can/want play TitanFall/Cod/BF/etc for hours and hours, some of us just love single player and for those kinds of people specially, indie games are very important
PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850