While speed is an option, time matters only to a small percentage of the cubers. For the majority of people, solving the cube is enough.
That's truly a myth. The cube can be solved using just one. Many algorithms are necessary only to those feeding the myth of speedcubing.
That's a big misconception. To be fair, it's not entirely wrong, but these methods were designed with speed in mind, which complicates the process and dramatically reduces the likelihood of success, especially for beginners.
For example, fully completing the first two layers requires the 'lookahead' technique, which aims to place two cubies in one move. Additionally, after completing the first two layers, you're left with only one rotation that won't disrupt what you've already done.
These myths, believe or not, are the main reason people fail solving the cube.