To be clear, I said this:
"Did you know that Hamas only really went after legitimate military targets until the 29 massacred in a mosque by an Israeli terrorist (Baruch Goldstein) in 1994 (and then 19 more Palestinians were killed by Israeli forces in riots). That's pretty much their villain origin story."
And you are sharing civilian bombings Ayyash was involved in after the Mosque massacre. Those all happened in April and the Hebron Massacre was in February.
"We were against targeting civilians ... After the Hebron massacre we determined that it was time to kill Israel's civilians ... we offered to stop if Israel would, but they rejected that offer." - Musa Abu Marzouk
According to Matti Steinberg, former advisor to Shin Bet and one of Israel's leading experts on Hamas, the massacre laid to rest an internal debate within Hamas on the usefulness of indiscriminate violence: "In the Hamas writings there is an explicit prohibition against indiscriminate harm to helpless people. The massacre at the mosque released them from this taboo and introduced a dimension of measure for measure, based on citations from the Koran."
en.wikipedia.org
In a vacuum, a terrorist should be captured/killed by the government, but none of this is happening in a vacuum. All of it is way more complicated than that simple question. They had a bunch of suicide bombings in 1994 and then they had mostly been quiet in 1995, and then they assassinated Ayyash in 1996, again, after Hamas had promised the PA to cease military operations. So, if you're asking me what Israel should have done? With the benefit of hindsight, knowing what the next 3 decades would hold and what Hamas would become....I'm pretty sure that assassinating Ayyash didn't work out for Israel.