As far as incident/accident database on internet is correct, this is only first Yemenia jet loss with fatalities, and 3rd jet write-off, evething else were props in 1970s and earlier. Surely you cannot compare them to major airlines on number of flights or RSK, but I feel too many of you too early jumping on older aircraft, "dodgier" operator, questionable maintenance. Apart from 310s they also have 330s, 738s and 10x A350 on order.
In last 10 years Air France has written off in accidents and incidents 732, 742F, Concorde, A343, A332, i.e 5 airframes incl 2 with fatalities and it is just a miracle A343 accident was no fatalities.
If I was French I would stay away from commenting Yemenia safety level, really.