The 20 Premier League sides south of the border gave approval for the Hawkeye system to be introduced from the start of next season.
But Easter Road manager Fenlon - whose side were denied an Edinburgh derby win over Hearts last month when striker Leigh Griffiths wrongly had a free-kick chalked off despite seeing the strike clear the goal-line - says there are more pressing issues to tackle north of the border.
The Scottish Premier League and counterparts from the Scottish Football League are still locked in talks over league reconstruction while there are also concerns over falling attendances across the country.
Fenlon said: "We had a fairly big example of this kind of goal-line decision and it was obviously a goal.
"It was disappointing, especially as it was in a derby game but it looks like the costs will be too much for them to bring it in to Scotland. We just have to go on what the SPL tells us. If they don't have the money, then fair enough.
"Are there bigger issues to be addressed up here? Yeah, of course there are. The money has to be spent wisely and it's fair to say goal-line technology is not the priority."
There have also been calls for teams to be handed video reviews in order to allow appeals over other contentious decisions but Fenlon is not a fan of the idea.
He said: "That's far enough now. Yeah okay, bring in goal-line technology. But anything more than that would be a step too far.
"Goal-line decisions are real game changers. If a goal is scored but isn't given, it can have a massive, massive impact on the game. But I think we should try and let the referees ref the game."