No. I think Americans underestimate how much wealth is out there and tax can increase a bit without much affect for the very rich or acting as a disincentive to invest in the economy - but the voters can decide.
Saying proposed tax increases is a slippery slope to further increases is just words - unless you can show a pattern of such broken promises on tax increases by the left - the only one I remember on tax was the famous broken promise by Bush senior.
Can you point to this Kamala policy about men in girls showers? The current policies are not soft on crime or promote mass immigration but up to you if you believe that.