what are you disagreeing with @Sharedealer ? since you’re repeating what’s already been said.
nobody is making a case against cost averaging, just that your complaint about the minimum is you being difficult as T212 built in the ‘value’ feature explicitly to allow £1+ worth of fractionals be purchased no matter if its Tesla, Berkshire or Rolls Royce. it’s a feature, not a “workaround”.
as soon as you talk about wanting to buy a cash amount of a share, you are no longer thinking in terms of shares, but value. “I want to own 0.1 shares of Z” is not “I want to own £1 worth of share Z”.