Behavioural automation in investing, is it a useful push or unnecessary layer?

I’m researching saving behaviour as part of my MA Psychology work, and I’ve been looking at a growing fintech design trend: behavioural automation, where investment amounts are adjusted dynamically based on spending patterns rather than fixed SIP mandates. The premise is behavioural rather than financial, Many individuals who understand investing still don’t maintain consistency because of liquidity concerns, monthly decision fatigue, and present-bias spending. Platforms attempting behavioural automation try to reduce those frictions by automatically sweeping surplus funds into investments within those boxes. From a purely behavioural finance perspective, the question becomes interesting… Is consistency more likely when investing amounts are behaviour-adjusted rather than fixed? Or does removing manual decision-making reduce intentional long-term allocation discipline?

Curious to hear views from people who actively manage portfolios, especially whether you see behavioural automation as a useful entry-level layer for new investors or largely redundant.