Elon Musk isn't really interested in Bitcoin if I should say so, so buying the number of Bitcoin to rival that of Satoshi will just mean he wants to do that for publicity stunt and nothing else. Satoshi will keep increasing in wealth because Bitcoin will keep surging. Now that Satoshi is in the wind, we can't speculate if they would add to their holdings but for the time being, I think the title of biggest Bitcoin holder would still go to Satoshi Nakamoto.

Artificial intelligence can affect Bitcoin’s popularity both positively and negatively. On one hand, AI can improve network security, automate trading, and enhance market analysis, making investing more accessible and profitable. On the other hand, AI development might lead to new digital currencies or alternatives that compete with Bitcoin. Overall, AI will definitely change the crypto industry, but how much depends on how these technologies are used.

I think one specific feature that the forum is missing is to automate the banning of a user from posting twice in a row instead of making a single post, there should be a specific time to be able to comment again in cases where no other user has commented yet.

Another feature is that the creator of the post can pin a reply to appear as the first comment on the post as a possible highlight, solution or informative depending on the topic.

Timing is important, but insider information on when they are going to pump and then dump the meme is more important; there will be a shilling and FOMO period, and right after that there's going to be a massive pump. There is a profit along the way, and on that course you should know when the dump will happen.
There will be speculation about the second round of the pump, and this could be a trap to invest again, but you could eventually lose if this turns out to be a lie, so timing is important, but a reliable insider tip is more crucial for big profit.

I already mentioned that only time can tell; the initial hype is there because PI is a very controversial project, they have been on headlines in the altcoins world from time to time for seven years.
Whales see this project as a good coin to pump and dump because of its popularity, so expect a roller coaster ride on its price. The developers should work for usage and contribution in the industry for it to stay long-term; if they fail to do so, this coin will become another chapter in the pump and dump history of altcoins.

what would be the difference of buying online versus at a physical store?

i think that buying things online leads more people to buying with bitcoin since they would not have to leave home and most importantly they can use digital money to efficiently pay for whatever it is that they bought

the pro i can think of paying with bitcoin in physical stores for customers is not having to carry cash with you but a con is you need to have internet connection for this