Not that true because sooner or later the bonus will turn to zero if you keep on being inactive without wager, no casino will give weekly/monthly bonus if the players are inactive for too long time.
That's the fact and many people already shared their experience here on stake's forum about their weekly/monthly bonus turned to few cents without wager although they are high VIP level.
Based on my own experiences for almost 8 years in Stake, their bonuses were better in the first few years but they have adjusted it and make it less than before.