Electra Protocol is an open-source and crowdsourced blockchain project. This means that the entire work was and is implemented by volunteering individuals who are not paid for their work – in contrast to most other layer-1 blockchains.
Even given the fact that anyone is working for free does not mean that the community does not have expenses, such as providing this website here to you. As a result, the community needed a way to be able to pay for project expenses. In order to make that happen, 10 percent of the total coin allocation was originally determined as community premine. In the meanwhile, this value has dropped to 6.7% (and it will further drop in the years to come as unused coins are burned).