Again, reputable scientists themselves beikleve the possibility. Here are just a few of the many articles agreeing with me.
https://www.powerofpositivity.com/parallel-universes-exist-scientists-proof/
http://blog.sci-nature.com/2022/09/scientists-believe-they-have-just.html
https://www.space.com/32728-parallel-universes.html
“Again, reputable scientists themselves beikleve the possibility.”
A belief in the possibility. You made a cold flat statement which they do not make.