Both are valid criticisms of Twitter. However, Jack could simply state what they intend to do about these problems. Instead he obfuscates, stonewalls, says thin

Both are valid criticisms of Twitter. However, Jack could simply state what they intend to do about these problems. Instead he obfuscates, stonewalls, says things that sound vaguely like plans of action, but increasingly look like a tactic to fend off critics while they continue to avoid accountability.