I think the comparison doesn't work because the composition of the teams doesn't change based on character choice. The interplay of the characters, and inherent strengths and weaknesses of each one create a dynamic metagame that games like MOBAs and Overwatch change to keep things fresh.
For games like Rocket League, CSGO, Overwatch, Apex, etc. The teams are even no matter what (skill aside). Meta still exists however, as anyone who has played multiple years of any of these games sees. Expected attacks, combos, and preferred approaches change over time as people discover weaknesses to the existing metagame and exploit them.
Not to say Rocket League has vastly changed in the last 8 years (I've played for 5 of them), but it's definitely different and a little updated.
Edit: Not to mention Rocket League rotates special game modes regularly for this purpose as well.
For games like Rocket League, CSGO, Overwatch, Apex, etc. The teams are even no matter what (skill aside). Meta still exists however, as anyone who has played multiple years of any of these games sees. Expected attacks, combos, and preferred approaches change over time as people discover weaknesses to the existing metagame and exploit them.
Not to say Rocket League has vastly changed in the last 8 years (I've played for 5 of them), but it's definitely different and a little updated.
Edit: Not to mention Rocket League rotates special game modes regularly for this purpose as well.