I actually do play the Exchange French (not familiar with the other lines ) but in general, any of the "less invested for study-type lines" by typical club players could be annoying as they would have to feel their way around like exploring a new neighborhood, often getting into fist-fights and trouble well before they expect it.
Likewise, I'm sure you'd be irked if somebody dropped a well-booked up 1.b4 monkey on you at a high-stakes OTB tournament round.
Though it's all about the waters you regularly swim in.
If your "chess = fun" equation requires only that you go to your local clubs and beat club players rated at the C/B/A levels, this approach gets you there.
I used to play a ton of Gambits for the same reason => "C'mon and play real chess, stop hiding behind your oceans of theory, you coward!" would be my taunt over the board.
On the other hand, if one day, you get ambitious about getting stronger and your "chess = fun" equation NOW includes scalping stronger players who are booked up enough to know openings (and chess in general) quite well, wouldn't you expect them to be aware of the publicized deficiencies of the Exchange French (which at the higher levels is well known to be a tame attempt by White to put up a fight) ,
I don't see how you'd be effective, let alone annoying to them.
Even with the Exchange French where I play the c4 idea and playing as aggressively as I can with an IQP, I know that I'm limping into this opening against a really strong player.
1.Play exchange variation vs. French opening.
You have "French" players, who are prepared for many moves of strategic redeployment, who are prepared of neverending struggle to activate that white bishop and who have faith in strong e6-d5 pawn structure.
And than, you change all that in a blink of an eye with one simple move. 3.exd5. You can laugh in their face for spending months of studies learning what is better. Qb6 or Nc6. cxd4 or Bd7.
In a blink of an eye they have open game, without e pawns where short castling is dangerous. You bring them to the open when you can hunt them like little rabbits.
2. Play closed sicilian.
So we have "Sicilians", players who like this opening where any move you make is variation that has a name. You don't really have to know what you are playing. Someone did play it before. Opening that everyone wants to learn first. And than you play 2.Nc3! They can play standard moves, not paying attention on what you do, and hoping that you will finally act like normal person and play d4. And than you play d3! They have their sicilian setup, but the fear of unknown will slowly eat their hearts, and you can just hear the horror on the other side of the world when everything starts to fall apart.
3. Play Falkbeer counter gambit vs. King gambit players.
So you have poor King gambiters. Players who have seen every one of 46 variations that can come up after 2.exf4, but they are still unsure every time when they play 2.f4 that they will not mixup something and regret one more time for weakening their King when they could just play 1.d4. Until next game that is. After your first masterpiece, it is hard to resist temptation whe you see 1.e4 e5.
And than you countergambit them. You strike a knife in the heart of their already weak theoretical knowledge. You insult everything that is holy for them. They will think that you are pagans, neanderthals! They will curse the day they played you. And you, you can just sit back and enjoy the torment of your opponents who will look at that e4 black pawn (after 3.exd5 e4) same as a Vampire would look at a stake that is going right in their black heart.