You state Israel will feel emboldened but how do you know what damage was done to Israel? Iarsel openly hiding losses.
I’m sure they had damage, but one advantage they have compared to Iran is that they can send their entire population to bomb shelters (to prevent casualties), and they have multi layered missile defence systems, as well as US missile defence systems in a small area of land.
I am sure there was damage from the Iranian strikes (not everything was intercepted), but the effectiveness of Iranian missiles only improves when they fire in huge salvos for prolonged periods.
To summarize the offensive capabilities of both countries, while Iran’s missiles are no slouches, for them to be more reliable and have better effectiveness, they need to go for prolonged periods.
Israel can cause more reliable damage, more precision and more explosive attacks on Iran from the air than vice versa, at least for a short period. Iran’s missile warheads do not carry a huge warhead (obviously) to cause as devastating the damage.
But the severe limitations of Israel’s air campaign are that they cannot sustain this for more than 2 weeks against Iran. Iran can go on for months, and give Israel the decisive blow (if we exclude the Samson option).
There is more evidence of Israel hitting Iran harder, verified by their strike on the petrochemical plant. Iran also doesn’t have the same level of defence systems to reasonably defend against a short, shock and awe Israeli aerial assault.
Compare interception/prevention rates of Israeli attacks by Iran versus interception rates of Iranian attacks by Israel, you’ll get your answer