I don't think there are some set of people or organizations pumping the of price Bitcoin somewhere; Bitcoin has passed the point where some people will be in one corner pumping Bitcoin. Just look at its market cap; how much do you think they will invest for it to be pumped? Also, know that Bitcoin is not an altcoin that most teams are pumping; in fact, they found it difficult to pump those altcoins with Bitcoin's large market cap. The price of bitcoin increases because of the high demand for it. People are coming to the cryptocurrency industry currently and investing in bitcoin because, while that is coming, it is not a demand of any whale.
Nobody will stop you from investing in any project. So far, you have done your own research, and you believe that the project is okay—not bad to invest in. As you said, you want to hold onto your Shiba Inu; nobody will stop, but they trust that is where many of these altcoins are not relying like that of Bitcoin,the people behind the project can remove their money, and lastly, it will be an abandoned project. There are many projects that did great, like Shiba Inu, but are now on the market. I am not saying Shiba is a good project, but the truth is that Bitcoin is far better than any other in the crypto industry.