Once again, one more “newbie” question, until you realize an account does not define the person behind it.

So, is
BTC really the ideal tool to replace banks in typical loans and mortgages, or is it only designed for big players and small-scale charity "loans" like we usually see in this forum?
Bitcoin isnt built to replace banks or other finances firm for mortgages or big loans. Its money, not the bank. Lending around BTC usually needs collateral or trust, so what we see here are mostly small peer to peer loans. Plus Im sure some bitcoin OGs prefer this forum to be most and major lending platform for everyone.