https://www.dictionary.com/browse/scientific-theory

"repeatedly confirmed through experiment or observation."

There is a ton of evidence about gravity. There is not a single shred of evidence for the supernatural that can be experimented on or tested. I say that to counter claims that spooky pictures or testimonies of alien abduction are evidence. While technically they are evidence, they are not compelling nor are they scientific. Whereas gravity, evolution, and so on have literal mountains of compelling evidence supporting them. Hence why they are scientific theories.

All theories are possible until proven or disproven.

No. This is the opposite of science. Even "theory" when used colloquially to mean a guess or idea still must be proven to be possible before it can be considered possible. For example if I said it's possible to read minds or use telepathy, I would need to demonstrate it to be possible first. It would not be up to you to prove me wrong. Although James Randi had lots of fun proving these charlatans as fakes, although it still wasn't his responsibility to do so. What he did was give them the opportunity to prove themselves right via various tests, and they all failed. Each and every single one of them. Similarly believers in god have every opportunity to prove any god exists, yet all people have always failed to provide compelling, falsifiable evidence for god.

Dismissal of another persons theories without evidence is a negative and hostile stance.

As I've explained such things are not scientific theories, therefore dismissing a person's guess who does not have any scientific evidence supporting said guess is perfectly acceptable. Like, if I said leprechauns are real and have a pot of gold at the end of rainbows, it is up to me to prove it to be true; it's not up to you to prove it to be false. Look up Russell's Teapot.

True science only cares about the facts, not guesses.

https://www.dictionary.com/browse/scientific-theory

"repeatedly confirmed through experiment or observation."

There is a ton of evidence about gravity. There is not a single shred of evidence for the supernatural that can be experimented on or tested. I say that to counter claims that spooky pictures or testimonies of alien abduction are evidence. While technically they are evidence, they are not compelling nor are they scientific. Whereas gravity, evolution, and so on have literal mountains of compelling evidence supporting them.

All theories are possible until proven or disproven.

No. This is the opposite of science. Even "theory" when used colloquially to mean a guess or idea still must be proven to be possible before it can be considered possible. For example if I said it's possible to read minds or use telepathy, I would need to demonstrate it to be possible first.

Dismissal of another persons theories without evidence is a negative and hostile stance.

As I've explained such things are not scientific theories, therefore dismissing a person's guess who does not have any scientific evidence supporting said guess is perfectly acceptable. Like, if I said leprechauns are real and have a pot of gold at the end of rainbows, it is up to me to prove it to be true; it's not up to you to prove it to be false. Look up Russell's Teapot.

True science only cares about the facts, not guesses.