Republic of Ireland have lost ground on Serbia in Group D after being held to a 1-1 draw in Georgia.
The visitors broke the deadlock after just four minutes at the Boris Paichadze Dinamo Arena through Shane Duffy.
Ireland could have had no complaints had the home side eventually picked up their first win of the campaign, but instead the points were shared and Ireland now know that victory is needed against Serbia on Tuesday.
Pressed on whether he gets frustrated by the team's style, Kerr added: "I think it frustrates a lot of people who like to see the game played with maybe a slightly better mix but it's been very effective for Martin O'Neill".
Walters also hit a rising drive that stung the palms of Makaridze, but Ireland's push for a late victor lacked conviction and O'Neill will hope his side are in better form in Tuesday's crunch match at Aviva Stadium.
"We didn't perform anywhere near good enough", said Arter, who had a quiet night and was replaced early in the second half by Aiden McGeady.
"We will try to make the last game hard for Serbia".
"We have to obviously play better and give the Serbians less room to play than we gave the Georgians tonight, particularly in the first-half". These are the types of players that need to feature against Austria as clearly demonstrated tonight, an attritional, defensive performance will not herald wins.
But Georgia dominated possession and took control of the game before Valeri Qazaishvili equalised after 34 minutes with a goal that seemed to knock the stuffing out of Ireland.
"For me it's a learning curve and I need to learn as quickly as possible to put things right".
The pattern of the first half was largely repeated after the break as the home side moved the ball at will, Ananidze side-footing a 49th-minute effort just wide.
A concerned O'Neill spent the early minutes of the second half camped in his technical area having chosen not to make any changes at the break, but no doubt sent his troops out under orders to hunt the ball down and attempt to retain it.
A free-kick ended up with Aiden McGeady ten yards out, but the Sunderland winger got his feet under the ball and blazed it over in the third minute of injury time.
"It's a pity that we had some individual mistakes, especially the goal we conceded, but football without mistakes just does not happen and I am very happy with the way that my team played overall, with their effort".
You ask that to any manager after a poor enough result and worse performance and you're going to get an inevitably cutting reply but O'Neill has dealt with these questions a lot and he's dealt with them from O'Donoghue specifically a lot.