No. Not at all. If I remember correctly, Guyana has a ~2500 person military. But it’s still weird because even though Venezuela has a more capable military and shares a border with Guyana, it’s not clear how Venezuela would actually invade. There is no road from directly Venezuela to Guyana, the area their border is on is dense, sparsely populated forest. The only road between the two countries goes through Brazil, who has a real army, and has moved troops to the border, I think. The other option is an amphibious assault, but that’s sketchy too because amphibious assaults are notoriously hard and there’s a US (and I think UK) naval presences just off the coast. So, like, Guyana’s military can’t really defend itself, but it’s also unclear how Venezuela would actually prosecute an attack.