Indeed, our sole purpose in coming to bitcoin is profit, nothing else. But many people don't dare to admit it and give hundreds of reasons that they care about decentralization, privacy...But no matter what excuses they make, they cannot hide their real purpose of making money.
There are people who passionate and dedicate their life for working on what they love and believe in. Like Satoshi Nakamoto and some Bitcoin developers, they perhaps did not create Bitcoin for profit (Satoshi Nakamoto) and did not contribute coding Bitcoin BIPs and related products for profit (Bitcoin developers after Satoshi Nakamoto).
The world is becoming more pragmatic, money is put first and without money we will have nothing in this world. Money and wealth are not just the goals of one person but of the whole world. So, you're right, there's no shame in admitting it.
That is partially true but people don't have to solely work for bitcoins, work for money but this partial truth implies reasons why some Bitcoin ogs turned to scammers. My explanation is they lost bitcoins which they got easily and cheaply in the past, then they regreted and wanted to get bitcoins back but when price was much higher, they decided to run scam projects for stealing money or bitcoins from the others.