The only action I have ever had fail in Africa was a custom .375 built on a FN CRF action. This one had the Browning style lever bolt release. It worked fine at home - but Namibia’s fine dust was another issue. Prior to heading into the Caprivi a shot at a PG animal left me with the bolt in my right hand on reload. A bit of sand blocked the bolt stop. Could have been embarrassing on an inbound buff. A thorough cleaning later, it worked fine on the buffalo, but did it again on return to the dust for the last few days of the hunt.
I have been hunting with an R8 for the last few years - to include a couple of buffalo. It is a push feed and is utterly reliable.
It would be silly to condemn all CRF actions because of the failure of one. But it is equally silly to do the same with push feed designs.