Do you not think it is more prudent for a person to remember his Lord and send blessings upon His Prophet privately, and that accountability is with Allah, instead of writing that in forums where copying and pasting without contemplation are prevalent?

There is no impediment to entering forums while remembering Allah, the Exalted. It is preferable to combine remembrance with both the heart and the tongue. If that is not possible, then remembrance with the heart and looking is better than abandoning it. A Muslim should be mindful of Allah in all their states.