Look, I confess this is a high price, maybe stratospheric and very optimistic.
Well, I don't know, but I believe for the BTC value reach $100M until 2035, I think the current economy needs to collapse and have a worldwide accession to Bitcoin.
I performed some calculations and so I think it's unlikely (in my humble opinion)
If we look at the current BTC circulation of approximately 18,800,000 units of BTC and apply the value of $100M per unit, your marketcap will be approximately almost $2 quadrillion.
This value is around 1,997 times greater than the current marketcap of Bitcoin (~ $941,800,517,584) and approximately 827 times greater than the current marketcap of all cryptoactives (~ $2,274,493,567,936)
And that's one of the reasons I think Bitcoin's value is unlikely to reach until 2035.
In any case, this is a throwaway prediction IMO. They're speculating on bitcoin's price 14 years from now, and nobody is going to remember their prediction that long into the future unless someone goes digging for it. My guess is that there's an ulterior motive behind their statement, since it seems incredibly bullish to say the least. They're probably trying to give bitcoin some hype for their personal gain directly or for their customers. And yeah, I'm being very cynical but that's what I think.
What @The Pharmacist said has a lot of nexus, and I also agree with him, they are probably wanting to "inflate" the value with these rumors to have some kind of personal advantage.
ps: these numbers are not entirely accurate and were taken from the coinmarketcap website.
I made these calculations to get a sense of these numbers