Didn't Reagan's Iran-Contra deal help release hostages out of Iran? Didn't the Taliban already get U.S. weapons during the Soviet invasion of Afghanistan? I'd like there to be no double standard: Reagan didn't get impeached for kowtowing to either the Taliban or the Ayatollah, nor should Biden.
I agree that Biden should not be impeached (nor is there really any serious possibility of that happening).
Reagan's dealings with Iran were questionable. There were allegations that the Reagan campaign in 1980 made a deal with the Iranian terrorists to keep the Americans in the embassy hostage until after Carter was out of office. Then there was Iran-Contra, where the US agreed to sell arms to the Iranians in exchange for several Westerners held hostage in Lebanon, with the proceeds from those arms sales being used to fund the Contras in Nicaragua. But at the same time, Reagan was sending arms to Iraq, which was at war with Iran. So, I guess you could say he was selling arms to both sides in that war.
Some people thought Reagan should have been impeached (I was one of them), but they didn't really have anything on him personally (and his popularity was still immensely high, so impeachment was a non-starter). A lot of attention was given to Lt. Col. Oliver North, who has since become a kind of icon and hero in the eyes of many on the right. Those hearings before Congress made him a celebrity.
Reagan and Bush also helped the Afghan rebels during the Soviet invasion of Afghanistan, although back then, they were called the Mujahedeen. I don't think the Taliban really existed until after the Soviets withdrew and the pro-Soviet government was overthrown. But his and many other administrations had a terrible habit of giving arms to any crackpot faction or tinpot dictator who claimed to be against communism and the USSR. Reagan had an obsession with communism. I wouldn't say he kowtowed to anyone, but he and many others of the anti-communist clique made some serious blunders and monumental errors in judgment which we're still paying for today.