I've only pruned highbush blueberries but you absolutely want to keep those tall shoots. Blueberries produce on second year shoots, those tall shoots are your first year shoots, which will branch next year and produce a lot more. You want them tall so they grow up into a bush and don't produce their berries low to the ground. You would be better served pruning out some of the older
wood as it will eventually decline.
When I learned to prune older bushes, we generally pruned out one older branch, which will stimulate more crown growth for first year shoots and clear out the lower area of the bush to increase air circulation and reduce disease. You leave 2-3 first year shoots, the tallest and thickest and then prune all other new shoots.
It's also good to prune for larger plants because they're easier to pick if the fruit is higher up.