The best advice one can get about investment is start were you are and don't wait for the perfect time because, the truth is that there is no such thing as perfect time when it comes to Bitcoin investment.And this is were DCA comes to play. Because the most important factor in investment is the availability of capital. As someone who is still trying to get footing in life it's not good to remain like that, starting somewhere is the best option by proper planing backed up by DCA I believe that anyone can actually invest in Bitcoin with out problems.
You see this advise thing, I have noticed that you see it around more during the bear market, and mostly it's from people that has experienced but run and bear market, they tend to make people understand the market and when the bull market returns, you don't get any advice again, people just discuss only about how the market will move forward, that alone is a sign that people must look into Bitcoin, no matter how you are not interested, just start small.
You can't have everything before you start investment on Bitcoin, just do what you think it's best for you and hold it. If it's small money you have as a monthly earner, just sacrifice small thing from your pocket and hold it, give it some time even though the profit does not looks good, just focus on it and if it gives you loss, don't get carried away, that red will turn to green some days.