The first thing is that there's a signal here that you believe there's something defective about introversion (i.e. that introversion is something to be reformed). To those who don't know, it's just a neutral personality trait (one of the Big Five--low extraversion) with its own pros and cons. There's nothing wrong with it and it can be happily embraced.

The second part is that you seem to have the common confusion of conflating introversion with poor public speaking (or at least an aversion to it). They're unrelated. Introversion just means interacting with people expends energy. The actual aversion to public speaking comes from lack of skill, anxiety, and awkwardness. I grant you that those things might be more prevalent in introverted people because it is easier to keep to yourself and not build those skills, but they're still two different things.

Finally, saying it isn't high pressure comes across as somewhat lacking in empathy. People feel different ways about different things, and invalidating those experiences is not helpful.

Personally, I have improved my public speaking a lot over the years by forcing myself to do talks, toastmasters, host meetups, etc. Now I'm pretty good at it and comfortable with it, but there was a ton of pressure and anxiety around it before. Even though it's better now, that doesn't make those experiences less real for myself or anyone else.