Yes, but I also think that it has gotten worse as a function of general cognitive decline. It would be entirely reasonable for that to happen, if only by limiting his ability to on-the-fly adjust his speech to account for the brain-mouth disconnect. In a sense, in being correct regarding the most proximate question (is Joe Biden misspeaking a product of a word-access and speech impediment?) but incorrect with its relevance to the question of mental decline, libs are doing what they always do and ignoring anything but immediate phenomena.