LOL! "Rash judgement" is not grave matter unless it involves my taking your life.
Merely pointing out that all priests and bishops of the SSPX are excommunicates is a fact. Nothing rash about that.
Not all "excommunicates" are valid. If they are unjustly imposed, they are nullities. In fact, the famous SSPX "excommunications" were canonically latae sententiae--automatic and conditional--something the Pope ignored, unjustly.