You are absolutely right. For some reason, people forget that they don't have to buy 1 bitcoin at once. You can only buy a part of bitcoin, and that will be enough. Gradually accumulating, you will get 1 bitcoin and even more. It all depends on your intentions and perseverance.
They must be able to understand this so they can start buying bitcoin with the smallest value according to the budget they have made. By buying bitcoin regularly, they can collect more satoshis, especially if the price of bitcoin experiences a deep decline.
By purchasing regularly, they can increase the number of satoshis and within a certain time, maybe they will be surprised to see the number of satoshis they can collect.
They may be even more eager to collect more satoshis when they see that they still have the opportunity to buy more bitcoins.
And yes, their intention and perseverance will increase when they see that they can collect up to a lot of satoshis.