WoWInterface - Changing buffs per row

Hi. I want to simply change amount of buffs displayed per row in default ui from 8 to 16
This can be done simply by writing BUFFS_PER_ROW = 16 saving as .lua and putting it alongside with .toc file into addons folder. I get no lua errors using this, basically I played half Legion with this simple "addon".
However I feel this is not right way of changing buffs per row because it's a default global variable
And using Bugsack/buggrabber addon I can see that sometimes my "addon" action is blocked while it attempts to call secure function: ArenaEnemyFrames:ClearAllPoints()

There's also code in this little addon provided by Resike in this thread
https://www.wowinterface.com/forums/...ad.php?t=55928
If I comment "BUFFS_PER_ROW=16" it seems it working without tainting anything

Lua Code:

BUFFS_PER_ROW = 16
    -- Player buffs
    local b = _G.BuffFrame
    b:SetMovable(true)
    b:SetUserPlaced(true)
    b:ClearAllPoints()
    b:SetPoint("TopRight", UIParent, "TopRight", - 200, - 20)
    b:SetMovable(false)
     
    local moving
    hooksecurefunc(BuffFrame, "SetPoint", function(self)
        if moving then
            return
        end
        moving = true
        self:SetMovable(true)
        self:SetUserPlaced(true)
        self:ClearAllPoints()
        self:SetPoint("TopRight", UIParent, "TopRight", - 200, - 20)
        self:SetMovable(false)
        moving = nil
    end)
     
    
    -- Player debuffs
    if DebuffButton_UpdateAnchors then
        hooksecurefunc("DebuffButton_UpdateAnchors", function()
            local d = _G.DebuffButton1
            if d then
                d:SetMovable(true)
                d:SetUserPlaced(true)
                d:ClearAllPoints()
                d:SetPoint("TopRight", BuffFrame, "TopRight", 0, - 120)
                d:SetMovable(false)
            end
        end)
    end

Unfortunately there seems to be no addons which allow to modify default buff frames. So is there a way to make changes to it without taint?