Many almost 2 yr olds have tantrums…so it would be hard to separate out causes for these. It is a normal stage that kids often go through before they have good communication skills.
That said, in our kids they may continue and many will later be diagnosed as on the Sutism spectrum and/or with sensory integration issues. I have found a combination of things to work, first, avoiding thing I know will provoke that response, second, increasing sensory diet (playdough, brushing, etc) as such an event like a birthday or large group gathering where new stuff can’t be avoided approaches, and third, setting expectations for more appropriate behavior (for kids much older than 2) as they get older .
By the way, I have 4 older kids than Rafi all of whom have some autistic like characteristics with good intellect and all of whom are not young adults, doing fine, thank G-d.
Jane in MN