No they shouldn't. A submarine is not just for Christmas it’s for life. And if you never use it, have no idea how to use, and do not have the special 'value adds' that make it combat effective, then its just a big hump of steel.Algeria also has two Project 877EKM Kilos, and Romania has 1 inoperational; but in any case any submarine not destroyed/captured or disabled should be treated very seriously, especially when armed with ASMs.
To provide an analogy that civilians might understand:
If you go and buy a very fast sports car, and you get your mates together as a 'team'. Do you then think you can enter a professional stock car racing circuit competition and be competitive? Say NASCAR in the USA or V8 Supercars in Australia? You may have a vehicle similar to the likes of Criag Lowndes or Martin Truex, Jr. and you may be a pretty good driver. But are you and your group of mates anywhere in the league of the professionals or as well equipped as they are? I would suspect you would come last in every race if you were lucky enough to survive.
Iran has a very long way to go before than can even meet basic qualifications for being a submarine service. Then they would be up against the best in the world.