It’d be a forever war. It won’t be as terrible as Vietnam since they’re a lot further from arms suppliers than Vietnam but Venezuela still has a significant military. They have a varied terrain including jungles and mountain ranges. US has historically antagonized every country in Latin America including now neighboring Colombia and Brazil - Brazil itself having a significant arms industry. You may not have a steady stream of Russian fighter jets to Venezuela, but I’m certain missiles, guns, artillery would all manage to make it to Venezuelan resistance. I wouldn’t be surprised if people all the way out from Nicaragua would make their way into Venezuela to fight the US





The US portion of the Vietnam war killed ~3 million Vietnamese, Lao, and Cambodian people. US bombings in Cambodia during the war lead to the fall of the neutral Cambodian government and the rise of the Khmer Rouge. Immediately before the US portion of the Vietnam war, the French killed hundreds of thousands more. Immediately before that was fighting against Japan and France during WW2. Immediately before that, fighting France for freedom. The Vietnam war was incredibly long and killed millions and set Cambodia towards a genocidal regime.
For Venezuela to be worse, millions would have to killed. Hundreds of thousands killed in neighboring countries. Chemical warfare employed that would lead to birth defects for decades to come. A neighboring country be bombed to civil war where a genocidal dictator rises power and commits a genocide. Venezuela then be successfully sanctioned to an extreme level of poverty for nearly 20+ years
The sanctioning power is already falling apart and non-US centric trade routes are a lot more mature than the 50-90s. The US military runs with extremely expensive equipment compared to the 60s/70s. Slow to build. War in Venezuela means it can’t sustain a war in Europe, the west Pacific, or the Middle East. Russia-Ukraine, Iraq and Afghanistan, Ethiopia-Tigray civil war, Sudan civil war. Got to add up numerous wars to compare to just the US portion of the Vietnam war
Also the US lost like 60,000 people in Vietnami believe France lost a similar amount as the US in the post-WW2 portion of the war
Going back to the Korean war, that too was far more brutal than people bother to learn
The Internet and the large Latin American population in the US may also lead to far more unrest in the US compared to Vietnam war American unrest. Venezuelan immigrants are substantial in the US compared to Viet people in the US during the Vietnam war
The brutality of Vietnam and Korea is like taking the European portion of WW2 and putting them in single countries. Carpet bombing, fire bombing, massacre after massacre. There’s been nothing comparable since. The wars in Africa have had way less difference in killing equipment between the factions compared to Vietnam and Korea and strategy has shifted from destroying everything to being more economical with military equipment. Recall that the US had major factions pushing to use nukes in both Korea and Vietnam. I doubt that’ll be the case for Venezuela
European and by extension American, Australian, South African, etc colonialism were far more genocidal than people get taught. By the 50s it was a lot less genocidal and look how that went. The previous centuries, elimination and replacement of local populations weren’t unpopular ideas, just impractical and not understood how to yet