There's the point you're making, and there's this: those government jobs can also be sources of funds for investing in Bitcoin, imagine not having a source of income and then you want to incest in Bitcoin. No matter how you plan on twisting the scenario, it's not a smart move. DCA, holding, the major investment strategies need a steady source of income, you can't DCA if there's no source of income to take funds from, and holding when you have no money at hand. If the government job serves as a good source to find Bitcoin investment, I don't see why it should be talked down on. There has to be a stream of income for the Bitcoin investment to work
What you have said is one of the best investment methods in Bitcoin and recommended investment method is perfect for Dollar Cost Averaging method. But OP wants to make a different point with his post i.e. he wants to say prepare your children for investing in bitcoin not for government jobs. That is, Opie wanted to highlight the difference between government jobs and investing in Bitcoin.
There has been a trend among us these days that once we get a government job we don't have to do anything else for which people prefer government jobs above all else. OP may have tried to explain the difference so that people don't have this misconception so that people are not bound by the walls of government jobs. Government jobs are subservient i.e. you have to do work according to the instructions of others and wait for a fixed amount of salary at the end of the month. But if we can educate our children about investing in Bitcoin and make them investors then they can work independently and earn money. But for this we need to first educate our children in good education and then inform them about investing in Bitcoin.
Well, there's that. But personally, I believe in the rule of multiple income streams, and as such a 'main job' (government jobs) should be able to act as a kind of fund source for other investments to a large extent, even if a person only has one government job, they can always be Bitcoin investors, it's a part time thing.
If someone happens to work two jobs, then invests in Bitcoin,it's still a plus, however, government jobs are good, so if you do not have a job, not just government jobs, there's almost no way to fund your BTC investment. And then if the job isn't good enough, you'll find that you may not be able to keep up.
Prepare your kids to get good jobs and then invest in Bitcoin.