There is a time and place for hashtags. They are supposed to be short and readable. #dontdoahashtaglikethis #notproperhashtagusage. Those are hard to read. At a minimum, if you are going to build a long hashtag, use camel casing. #itMakesTheHashTagMoreReadable. If your hashtag is that long, just spell it out as a sentence.
Older folks read the hashtag as the pound symbol. So be careful when starting a hashtag campaign that starts with the pound symbol such as the #MeToo movement. Also, #hashbrowns are delicious.