Was going through some post on the forum when I came across this writing in a free signature space which writes make sure you back up your wallet regularly! Unlike a bank account, nobody can help you if you loss access to your BTC.

That is not a free signature space. There is Rollbit signature in that space. It is rather forum advertisement space.
Im not trying to down in BTC but at times we should call a spade a spade and accept the fact that aside decentralization that bitcoin offers and its volatility that we all profit from, a lot of people would still want to stick to the traditional banks because it also seems to be one of the safest place to keep our money.
Even with BTC volatility that makes people profit from bitcoin and despite the decentralized nature of bitcoin, some persons still prefer to save with the government highly centralised banks.
This does not mean that Bank is safer than BTC or is the safest means of saving. It is because of their ignorance and no one has been able to unlearn them what the centralised society taught them.
Some people are so lazy such that they would want to employ someone to be brushing their teeth. They have auditors, accountants, financial advisors and lawyers. They do not want to control their money themselves. To such people, bank is the best for them.
There's no technology without a disadvantage. But for BTC, the pros heavily outweighs the cons.