You probably woke up late from your winter hibernation so i'll let you know that we are no longer in a bear market. A bear market is characterized by lower highs and lower lows and we've been in something opposite for months.
Altcoin dividends are great. I also like bitcoin dividends in the form of forks. Can't say no to free money!
I don't know how they should be taxed or if they are securities. It depends on the country and in the US sometimes even on the state.