relative to objective facts, i'm not sure, but relative to Pakistani govt's border security and preparation, hell yes- Iran has done probably 5-10X more on the Iran-Pakistan border than Paksitan has done. Iran started support Baloch terrorists against Pakistan because Pakistan left Iran no option to counter the terrorists that US and Saudis were funding on Pakistan soil against Iran.
just recently a IRGC colonel was assassinated in public in Sistan-Balochistan
1 or a few security incidents dont tell the full picture, we have to look at the entire context- that border region is huge and desolate- security is also relative, it depends on many dynamics and contexts. Terrorism happens on Pakistan's side of the border daily, but on Iran's side its occasionally,and that only increase recently because : 1. Taliban took over in Afghanistan and 2. Pakistan's govt was bought out by US, so Pakistan is now a proxy for US, just like ISIS was a proxy, so Pakistani territory, minorities like Balochs and Jaish ul adl and Jundollah, etc are being used against Iran.
many many other cases
we cannot pretend every one of these cases is because of terrorists who live in Pakistan who cross into Iran, somehow kill a high ranking IRGC member/official (by luck and no planning?), then flee back into Pakistan
sure. I think Iran didnt militarize its border with Pakistan because historically it hasn't had too much terrorist activity on the border it couldn't manage with border guards and police, but now that it seems the Pakistani state aka its military is involved in insecurity and terrorism on the Iran-Pakistan border, Iran will have to militarize and beef up its border with Pakistan, just watch. Especially with the recent Pakistani retaliation missile and drone attacks? Its a new day in Iran- Pakistan relations and border and military dynamics- Iran knows Islam is a mask that Pakistan is using now to say its Iran's friend.
We have a lot of work to do to clean up our side of the border and we should focus on this, and on controlling the border better. That border is a porous disaster, but most of our borders are the same...
Sure, Iran can do more. But even US the "supapawa" cant secure its Mexico border that well but the world says it has the best military and military tech on earth.