It does not mean you will always have to wait very long time for first confirmation with low transaction fee rate then low transaction fee. It depends on mempool status and if mempool is clear, you can get very quick first confirmation within 1 or 2 block.
You are correct, but that was not what happened, mempool was not so less congested at the time to get 2.21 sat/vbyte transactions confirmed at the time it was confirmed. Read what other people have posted before you which answer his question correctly.