Yes, under the constitution, which the Court just put the President above. If the President might be immune then anything the President did is not admissible in court now. So how does the Senate even hold a trial, let alone convict a President when they cannot enter any evidence now?
This decision is written in a bad faith way to get Trump out of being tried, and with the knowledge that Biden will not exploit it and the hope that Trump wins and becomes our new king. The “conservative” Justices can get their “gratuity” and retire living out the rest of their lives taken care of.