No, only some parts are not updated some years, but the last core update is from 10 hours ago, others from a month. It's a very small community and logical that the developement isn't so active as in the big ones. The last updates also includes the possibility to use extensions, before not prossible. But yes, it's always better to use browsers in active developement and community. Which isn't the case in indie and marginal browsers and forks, mostly 1-2 devs projects.